Recruit any NPC - Transform NPC Into Playable Character - Make Full Custom Character Party - No party limit - Resurrect Dead
https://www.nexusmods.com/baldursgate3/mods/1646

This mod is amazing! So much fun to play around with! It also shows just how easy it would have been for Larian to add an option to create custom companions, yet they, for some strange reason, chose not to. This mod saved my day! Now we will see what Larian has to offer us tomorrow for Patch 3.