Premade households - Who should i play with?

I'd play the Roomies, for the reason that they seem to be a nicely diverse bunch gameplaywise. Ideally I'd give each a partner from outside the household, thus sparking five households. But since you want only three additional households, you could pair some of the Roomies up with each other. In any case your three new households all originating from the Roomies gives them a shared backstory, what is something I value in rotational saves.