I have not used Mint in a long time, so I cannot really compare it. I think Solus works great (I am biased) for simple home use (a little bit office work, a little bit of gaming, a little bit of developing).

I think most of the software you mentioned are available natively on Solus repository except openwebui (not sure). I mostly play a single player game and emulation, so cannot say about those multiplayer games.

Do feel free to visit our forum (dicuss.getsol.us) to ask these questions. Many more peole are hanging out there.

Cheers!