Let's start comparing the games... and we start with companions.
I haven't finished WotR yet, but so far it feels like a good game with mostly great gameplay interesting general story arc (taken from the Pathfinder module) but average writing (done by Owlcat writers). Kingsmaker writing was not great either but sill way better. The story looks like it's written by a male teenager with traumatic dating experience (all romanceable female companions are psychopaths, one of them brain-damaged). The story line is fine and was not done by Owlcat studio, but the implementation of this story line is meh. Voice over is hit and miss. WotR companions: 1. Seelah is an alcoholic paladin, she always talk about drinking, most of her conversations revolve around drinking, and also she drinks while on duty. Personal quest is very predictable and not very engaging. Voice over is fine. 2. Camellia is a psychopath, a serial killer and a cannibal. Her personal quest is well done... but why would main character want an insane serial killer as a companion (when it's revealed) even if evil? Voice over is good. 3. Wenduag is a bootlicker, a psychopath and a cannibal. Her personal quest is meh. Voice over is bad (by some reason the Owlcat decided that openly evil females should always growl when they speak). She's the WotR's Lae'zael, except Lae'zael doesn't bootlick. 4. Lann (didn't take him to form an opinion) 5. Woljif is a liar and a coward. Actually a believable personality for a thief. His personal quest is good. Voice over is good. This is a well made character even though he's not very likeable. 6. Ember is a pure oxymoron character. In the story description she's ugly scarred "child", on her picture she's conveniently scarred only in places that won't make her looks bad. If she's a real child then why she's a companion to begin with? In the story she's a naive pacifist but as a companion she murders and destroys enemies left and right, casts the deadliest spells including hellfire rays... Also from the get go she has powers pretty much equal to gods... Her personal quest is nonsense. Voice over is good. 7. Daeran is a narcissistic psychopath, has machiavellian personality. Interesting personal quest, which lacks content. Good voice over. He's WotR's Astarion. 8. Nenio is a narcissistic pseudo-scientist. She uses anachronistic modern lingo. She is supposedly a scientist but she has no idea what scientific methods are. Marked as neutral she's actually evil because she's selfish and has no problem to murder someone if she needs something for her so called "experiments". Personal quest is bland. Voice over is bad. 9. Arueshalae is a demon (thus psychopath, sadistic murderer and consumer of human flesh) who, due to divine intervention, suddenly acquired compassion. Somehow she also has got brain damage because, instead of just getting compassion she also became submissive and stupid even though she has hundreds years of experience. She behaves like an inexperienced clueless teenage schoolgirl in the cringy manner. Personal quest is cringy. Her alignment by some reason is chaotic neutral, however she always acts as neutral good. Voice over is bad. 10. Sosiel is a sissy flower child cleric. What he's doing in the crusade is a mystery because his personality doesn't fit the environment, besides being absolutely unrealistic representation of a human being. His personal quest in general is good. Voice acting is fine. 11. Greybor is a psychopath and a pretentious assassin. His plot feels like it has been written by the schoolboy imagining being a cool assassin. Somehow he is marked as neutral alignment even though he murder anyone for money without remorse, therefore he is actually neutral evil. The personal quest is in theory, not bad, but badly designed. Voice over is fine. 12. Regill is a fanatically lawful hellknight. Somehow he's marked as lawful evil even though throughout the game he makes no single evil action. More than that, in "the most desired dream" it is shown that he is absolutely not selfish and 100% devoted to his duty. Therefore he's clearly lawful neutral to the letter. Besides couple of issues he's well made character. Voice acting is great.
In conclusion, despite large variety of companions there are no likable ones. If we compare them with BG3 companions, who are also not very likeable, at least they are mostly well written. BG3 is a clear winner here.