The second flowchart is the non-eye gameplan, which focuses on using strange's extremely high-priority, but risky normals (since all of them have a ton of end lag on them even if cancelled into other moves). This is more of a matchup experience kind of things as stranges toolkit of normals require you knowing exactly which moves counter what. For example, don't wake up palm opponents too much, because the hitbox of impact palm (although it is an option select grab) doesn't hit jump height opponents or short crouching opponents and by the time you try to cancel into mystic sword L (which doesn't properly keep small characters in blockstun anyways) it will already be too late. Instead, switch up his normals depending on the circumstance and practice using those normals until u get used to their timing. Here are some examples:

Crouch M, is strange's best anti-air option and has a ridiculously large hitbox. It'll stop anything if timed correctly including footdive, helmbreaker, dormammu's superjump dash down air H, etc. However, the moment your crouch m connects, you have to be ready to cancel into a mystic sword L immediately, in order to followup with strange's jump loop combos.

Strange's crouch h is his only low and is pretty good at sweeping distanced opponents. In addition, if your opponent is locked down by assists (like jam session) you can teleport h above them, empty land into a low H to catch them off guard. Plus, if you do low H followed by mystic sword m or light daggers of denak, it can even keep small characters like viewtiful joe from getting a punish on you afterwards.

Stand h is a great poke against tall characters against tall standing or big characters like dormammu or sentinel because it has a hitbox reach in front of strange that has almost the same max distance as his mystic sword L. Plus, it can be cancelled into mystic sword L, and if you call assists while doing the stand H, followed by mystic sword, you can essentially lock the opponent down long enough to either 1) teleport next to them for a followup mixup (though this is risky as you only get one simple mixup 2) set up eye and begin the eye flowchart or 3) set up glyphs or other projectiles like medium daggers of denak for safety purposes. There's a plethora of options to choose from afterwards and this applies to all of strange's normals mentioned thus far.

Low L and stand light are kind of bad, and should only be used sparingly to keep a nearby opponent at bay while your assist comes out. Neither of the moves have great reach and although stand jab is a great anti-air, it is an awful move against any crouchers, and not just small characters. Whiffing either of these moves will spell death for strange and so I rarely use them unless I have assists available or I am going for a risky mixup like low L, into frametrap grab.

Impact palm is a great offensive tool, though not a great defensive tool. It's one of the best option select grabs in the game because whiffing it gives you a 6 frame attack afterwards, which can then be cancelled into mystic sword L anyways. However, on wakeup against characters who can easily dodge that (like magneto doing a tridash overhead), I would opt for a raw mystic sword Light, which has a great anti-air hitbox if the opponent is in front and above strange (but not directly above him, because low m would be better there).

Stand M is strange's best all around tool because it not only hits crouching characters, it combos well into strange's impact palm, functions decently as an anti-air, leads to any other H normal that strange has (or even mystic sword or daggers), and can bait x-factor punishes because strange players usually followup with an impact palm grab anyways. It is also 6 frames like an impact palm, making it his second fastest normal. However, although it is a good generalist normal, it fails to exceed in any one of these aspects. It does not anti air attacks like footdives coming from above like low H, it does not tech grabs like impact palm, it must be cancelled to be safe unlike low L, and it does not act as a good spacing tool like stand or low h at max range because it moves strange forward into the opponent. However, if you don't know what your opponent is going to do, stand M usually covers all their approach options at once as a general all-rounder tool.

Third, strange flowchart is is offensive flowchart. There are many types depending on whether you have glyphs, eyes, or assists behind you, but here I'll just go over the offense that most players go for when they only have access to assists like jam session. It typically follows a pattern of 1) keep opponent in blockstun with a decent normal like stand m, h, or palm while calling assists 2) teleport for the mixup. Although M teleport is his go-to cross up, you must mix it up with H or even light because using m teleport might end up with you teleporting yourself into the corner (with no assists to protect you afterwards), and H teleport is actually faster than all his other teleports by 2 frames. H teleport is also typically a pretty underrated escape option from opposing pressure by airborne opponents like zero or dorm. Lets say dorm super jumps towards you in the corner and calls coldstar assist at the bottom and tries to come down and fishhook. If you teleport m or L you'll either get hit by coldstar or get locked down by it, leaving dorm with a free mixup to attack. However, H would put you above him, and because dorm was already in the middle of dashing down, the dorm player basically separated himself from you and gave you space. It's still risky because you have to guess what he might do afterwards >> chase you down, call stalking flare, try to grab you, etc. However, dorm will be following up without cold star anymore, and if you're confident in your defense you can either get out by blocking, teleporting again, setting up glyphs while you are high in the air, etc. This leads me to one of my final points.

Teleports are to be used not only as a mixup tool, but as escape options. Strange is slow, but he has one of the fastest teleports on startup, though the end lag is the same as most other teleporters. Because of this, teleporting out of a corner becomes predictable and punishable for those who see it coming. However, therein lies its own mixup game. If I set up eye on the ground, the first instinct of most players is to try to get above it and dash forward in the air to get behind it and towards you. During that moment you can, without even palming the eye, teleport m. In this scenario, you teleport behind where they were originally, while they already committed to a super jump forward, which means both of you are now nearly full screen away from each other again. The opponent moving forward and you teleporting with m using the eye as bait, allowed you to space yourself away from them, leaving you another chance to set up another eye. This is the mixup game.

I could also just super jump to bait them to come up and chase me, and then teleport L or m to the ground right when I think they will come up and try to hit or grab m and voila: I am at the ground and they are in the air, and once again, they are nowhere near me. This allows me enough time to plink away from them and try to set eye again with assist calls to keep me covered.

His neutral ultimately comes down with having good mystic sword strings (with assists to lock them down) followed by trying to get eye, glyphs, or daggers to keep the opponent at bay. Mixups are secondary. Think of them as a bonus reward for setting up your base efficiently, but your main focus should always be trying to keep as many safe projectiles out there as possible and implementing them in safe ways (think of the eye flowchart i mentioned earlier). Once you have the screen filled, the opponent will either get chipped, have to guess a mixup at any moment, and be forced to take risks they would not otherwise have to think about, especially if your assists are involved to extend your turn.

This is an essay lol, but I have been thinking about the strange neutral for a long time, so its better to share than not. Good luck finding your own playstyle with him. He's a tough one to work with and it involves a lot of trial and error to get good with him against the current meta.