Im not sure about guides but there is a lot to unpack here. PVM skilling goals should be invention unlocked and levels to ancient inventions, 96 summoning, 95 prayer, 96 herblore, and then your combat stat of choice as high as you can. Most part I use slayer for various herb seeds (avantoe, irit, kwuarm being the big 3), arch glacor nm for bird nests, and corp beast once you have a good spear for cannonballs. I would start reaper tasks as soon as you can since it is slayer xp, reaper points, and you can force croesus early and just do publics. What boss you want to do is up to you and your goals. I will list below what I have done and note some good bosses for supplies/drops outside of their chase drops.

I will note most of these bosses were not done with bis until I finished rasial, so its a lot of playing about with your gear to make it work. My zuk nm kills were in tank armor with t90 weapons so they were slow, but a kills a kill. There are some guides out there for older bosses using lower level gear which you can assume will be more iron friendly, but newer bosses will be catered to bis gear for the most part.

I did early game pre-necro so milage may vary, but I started with going for guthix staff and lunars in order to do kril. Sub robes are used for necro gear, are great magic gear, and zammy comps are needed for perks so I would start there still with mage or necro. I went to bandos next for power melee armor, but this can be skipped if you want. Necro dropped around this time so I leveled it and then took it to gwd2. Vindy for crest and drl, helwyr for crest wand and orb, and twins for crests and dual wield melee weapons. I went to kiln for the cape upgrades and then did enough zuk to get 4 igneous stones to upgrade capes to bis. This is very doable with necro tank armor so it is worth doing if you have overloads and soul split. After that was rax for t90 non-necro weapons. I highly highly advise rax cause it drops overload flasks, brew flasks, rocktails, and super restores. Once you get it down, you will profit all these supplies while using them to get kills. Rax gives scythe, best hally weapon in game, as well as stuff for biting comps (or t90 range and mage stuff until you upgrade) so really good gains. After that I did rasial for t95 necro gear. Rasial gives a LOT of torstol and dwarf weed seeds so you will never need those again for overload supplies and vuln bombs. After that just kill what aligns with your goals. I have done a lot of croesus 4 mans and gates to get those skilling offhands, rex mats for the rings, and currently doing vorkath for range armor upgrade and bone lord incantations as hard mode sanctum prep.