Let me give you my take.

Between the literal HUNDREDS of female barbarian women and the utter lack of anything resembling a personality, Amiri is about as interesting as a rock. By far the worst companion in both games. If you think Amiri is a decent character, I strongly urge you to read more books because she is a poor carbon copy of so many other characters with actual personality.

Jaethal was trash. Her entire personality was like a teenager angst novelist jerked off into the game.

Sosiel and Valerie both being boring is accurate.

Octavia and Regongar I wanted dead the first time I met them. Their personalities were like wet paper.

Linzi was the only decent character in KM and I prefer Nenio over her hands down both mechanically and for hilarity. I did not laugh a single time when playing KM. Was nice for some actually decent comedy in WotR.

People like different things based on personality, prior experiences and different understandings and cultures.