Honestly I think the companions are all pretty reasonably characterized. Lae'zel does feel rough and hostile but that seems to be the Githyanki's thing, even then she's still my favourite character so far. Shadowheart seems guarded and disinclined to trust you or be open, but she generally holds her tongue and doesn't seem overtly hostile to my character for the most part. Gale seems chill and reasonable. Wyll is a lot of fun.