In terms of what would suit them personality wise instead of builds (I'm not that interested in builds) I liked Minthara as a cleric honestly.
I do think that Astarion makes for a good rogue, although I know this is not necessarily a popular opinion and that some people see him more as a bard (I disagree), funnily enough they recently talked about the character design process and the two characters who had a set class very early on were SH (for obvious reasons) and Astarion.
Minsc is better as a barbarian for sure.
Btw, I like the new icon fylimar
