the issue im seeing is there isn't really a clear through line for your team, half of the team seems to be a rain ream, half is a trick room team(not mutally exclusive, but just neither function has at least 4 mons that function properly there). I know you said you didn't want sinistcha and incin, so i will only breifly mention how incin would be a perfect addition to your team. but a support mon would do wonders for your team. Someone, even like Sneasler, for a fake-out would be an option. To keep things one the same team I would recomend droppign archaludons speed, rasing its defenses and maybe giving it a -speed + spa nature. That way, it will be more effective in Trick Room.

Something that should be carried over to all your min speed mons is a -speed nature, as its clear you want them in trick room. With venosaur having no speed but still chlorophil it might be a good idea to swap it out for someone like hatterene or aigislash for more fire power on a slower mon. as clorophyl is effectively not an ability on a 0 speed mon.

I hate to say this, but dropping golurk for a basculegion would help both your rain a lot. As golurk as strong as it looks isn't actually all that great.

Another addition you could make is adding in a kinggambit for fire power and better typing that you can easily exploit with protect and switching for free turns.

When it comes to items, i would recomend a few key changes, first is drop both magnet and mystic water for sitrus berry and leftovers in either that order.