I try to avoid repeating personality types, but that's almost unavoidable because there are 8 personalities and 10 spots for villagers (9 of which are mandatory). I think the personality I'll end up repeating will be Uchis, because lots of the villagers whose design I like best are Uchis. There are some types I don't want to repeat if possible because I like the one villager I have within those too much to end up being distracted by another one with an almost identical dialogue.