I moved your post here as the tank section does not allow others to post and is to show off your tank only.
The fish you want to add will all go well with the others. I love Rhom barbs and you do not see them very often.
Personally, I would not add all of those fish though. Not because of overstocking but I think a tank with larger numbers of a few species looks much nicer than smaller numbers of many species. 20 rummy noses, for instance, would look better than 10 rummy noses and 10 cherry barbs. The fish will interact and colour up more if in larger numbers as all are fish who like to be in a large group of their own species.