Preferably without spoiling me too much, is there a class in WotR that's particularly bad for my MC, a role that the (important/"cannon") companions fill/overfill?
E.g., in Kingmaker Amiri always joins you, Linzi is the chronicler of your adventurers, and you get 2 clerics (one of which has strong ties to the story), so picking a MC Barbarian/Bard/Cleric is a bit redundant. (I want to argue that Valerie is also a "core companion," but that's probably because of my personal preferences to not play a tank, meaning that she is ~required in all my Km parties).
If you are talking roles (its implausible to reach all classes), there are roughly two for every basic RPG role
Three fighters (Pally, Slayer and hellknight)
Three ranged fighters ( you can only pick two)
Two rangers (demon and undead)
two dedicated healers (oracle and cleric)
A pure wizard
An eldrich rogue ( rogue with wizard spellcasting)
Two versatile casters ( Shaman and witch)
Optionally there are also some companions tied to some of the Mythic paths, the pets you can also level up and equip with items and the talking weapon (for banters only)
So I think you can be any class you want, you can make a party that suits you.
