You can stick some of those in there they basically all get along and some may be more territoral that others but they will understand. Remember 1" of fish per gal.
like all mollies mainly lear tails
cardinal tetras, and lemons are nice
and platies have all nice colors
Hopefully this isn't the same tank that you already have 7 fish in it and lost many others in a day. and people already replied and told that it wouldn't be a good idea to put anymore in there.
Just remember if you get livebearers you are going to get fry. And if you only have a ten gallon you might not have enough room for all of the babies you'll be getting. Just be careful.