It's frustrating how the story companions generally don't support certain multi classing options.
Paladin: Ekun is the only one Lawful Good character and he has 10 CHA.
Monk: Of the two Lawful characters, Ekun has 13 WIS and Valerie has 15 CHA.
Sorc: Nobody has more than 16 CHA. Of those who do, Tristian has spent three levels elsewhere and
Regongar has spent two, so they are too far behind. Your only shot is with Linzi, just enjoy being one level and 4 points of CHA behind a merc.
Wizard: Octavia is already one, and Jubilost has spent five levels in alchemist. Everyone else has 14 int or less.
Inquisitor/Cleric: The three characters with more than 14 WIS are already locked into their bad gods and bad domains. No Animal/Travel/Community/etc domains for you.
Shout out to Harrim for wasting his first feat on heavy armor proficiency, and to Valerie and Amiri to locking themselves into specific weapon focuses.
This is incorrect.
1) One of the main design goals of PF was to make single-classing more viable than 3.5 did. Unlike Wrath you're not shoehorned into it, but it's still going to be better than 90% of alternatives.
2) That said, all the early game companions set up well for multiclassing other than Linzi, and she ended up getting a Fae Sorc splash on my Unfair run.
3) Pal is the only unsupported multi. This is due to Owlcat wussing out on Val's companion quest. Unlike Wrath not a great Pal setting anyway, though a fine MC. Given lack of L companions probably intended for MC to fill that gap.
4) Val *does* end up getting enough CHR to support Bard/Feyspeaker thru her companion quest/Oppressor Basterd Sword. Probably melee Sorc too if that's your thing.
5) If you use Wing with a Shield (not legal in Tabletop) then Monk is also a fine splash/multi for her. I eventually figured out thru melee Seelah that the change was likely intended to make armored/shield tanking more competitive with armorless.
6) Why are you trying to make a multiclass caster in the first place? Octavia is fine Wiz, and can in fact multi off of that if you want to do 3.5 EK stuff.
7) If you want Community get it via Ekun Sacred Huntmaster. Travel is meh without Swift Mythic. Animool is just bad (late pet, no abilities, redundant spells).
Jae is already a great Inquisitor (a class that *really* wants to be single class), and can cast fine as needed. Obv you also get two Clerics, and a third late depending.
You are retarded. Touch of Chaos and Destructive Aura are uniquely powerful effects and those domains provide needed extra spells for Necro Sorc. Touch of Good probably generates more EXP than any other ability in the game (and don't sleep on Holy Lance). Death lets Jae be playable Undead. Only meh one is Healing Domain but some people like to cast Healing spells and it makes those suck less.
Sounds like you're wanting to play 3.5 in a PF shell. For PF ruleset P:K companions set up much better for multi-classing than Wrath ones, where it looks like they really wanted to beat the player over the head with the benefits of single-classing because too many are stuck on their 3.5 binky and classes. If you want to beat Lantern King with Grease spam this is probably not the game for you.
Tested viable mutlis:
Val: Bard, Feyspeaker (great way to survive Unfair early game), Kinetic Knight
Amiri: Freebooter, Defender of True World, Sacred Huntmaster
Harrim: Ranger (only way to unlock his Urgrosh through Combat Style Feats), Monster Tactician
Octavia: Sword Saint/Duelist/EK, Eldritch Archer
Tristian: Eldritch Archer/Mystic Theurge, can do it with Scion as well which ends up being pretty funny
Linzi: Thug/Barb/whatever if you make Val your Bard.
There are obv several other ways you can go if you get creative, which is kind of the point.