I got my submission rejected because I was playing in Commander mode. I thought Solo AI meant Solo game with AI with you VS true solo is quick play by yourself, I struggle to find treads about this and i think its better to clarify it here soo there wont be less people getting this wrong.

You can't play in commander mode for any submission. You must either be in practice mode (for AI Solo) or create a private multiplayer game for True Solo speedrun attempt.

Basically what Hee_Hee said

Solo AI is quick play / practice mode , and you play by yourself with the AI

True solo is loading up a multiplayer lobby by yourself , thus giving you no AI

Duo and etc is obviously just multiplayer with how many people you’re with

The reason we don’t accept commander is mainly because the AI have trait benefits that they don’t have in quick play , thus potentially giving the player an advantage or disadvantage over someone else

Also it’s a real pain in the ass to restart a run from commander mode , so it also just saves you time !