Yeah, I'll list them. Up to date mods:
Beautiful Universe
Planetary Diversity (and all sub mods)
DarkSpace
UI Overhaul Dynamic
Upper limits V3.4+
Ethics and Civics Classic
Gigastructural Engineering
Guilli's Planet modifiers
Reaper shipset continued
More AI personalities
Starcraft Music
More events
ISB Graphics
Plentiful Traditions
Tiny Outliner v2
Resettle Colony
Dynamic Difficulty
EST vassal fix (this was just to fix a crash)
Out of date, but still working mods:
Stellaris total war (this just gives the Total War casus belli)
Galactic market trade all resources
Expanded Gestalts: Forgotten Queens
ANZ Patch: Forgotten Queens (updates forgotten queens to current patch, but I still put this here)
Not sure which mods could be my culprit.