If you want things that are available (some species exist but good luck finding them for sale) and won’t interbreed, you are kinda stuck with like one species each of 3 varieties. Neocardenia, halocardenia, and cardenia. But that’s not really much selection, because some shrimps are filter feeders so need water movement and stuff. If you could set up a tank to account for all species needs you could have, at absolute most, four kinds of shrimp - I totally did the work on that one years ago but I don’t recall which varieties it was off the top of my head - I can take a gander later today if you’d like; my brain is built for such things.

It kinda sucks, and I’m really not trying to discourage you at all, but I guess better to know now than be disappointed later after the money and effort is spent lol (I wanted the same thing you do! I still do! But yeah it’s complicated)

But you’d still have some cool colored shrimp for a while if you did the cull pack thing (I wouldn’t recommend wasting the money for top of the line colors just to mix them, but the stuff on aquabid tends to only be a step down from that, and comes from the same breeders you’ll find with their own websites, like aquaticarts) with 3 of the same species. Just not a long-term stable setup unless you want to cull any that are brown/not bright throughout the life of the setup (if nothing eats them, it’ll probably be fine to keep the vibrant and cull the rest, your breeding population shouldn’t crash from that as long as you leave like 15-20% of each hatch.)

So I mean it kinda depends how much effort you want, and whether or not the tank you are thinking can fit a net. I tend to be a set and forget sort (I set up my tanks to be stable long term with just added water and occasional food, because I’m very lazy) so culling every hatch cycle isn’t in the cards for me. But maybe it is for you, you seem to have more energy than I do, what with posting stuff all the time ;)

If you do cull them as small babies, your betta might eat them, circle of life is totally entertaining, and if not they make good tank mates. If you know anyone with aquatic turtles or bigger predatory fish, that’s a great use for culls as well.

Ok sorry ima shut up now. lol. If you want me to take a look and see what’s available these days and which would be compatible, lmk. :)