Depending on the fish picked you can fit a good amount in a 24g tank. But not the ones you have in your list mentioned above.
When i say nano or micro fish, I'm talking fish that get to about an inch or so- WHEN FULLY GROWN! In a 24g nano I would probably get like 3 clown goby's, a small blenny like the two spot and maybe one more fish in the same size range. I would however go nuts with inverts. lol I love shrimp and crabs so i'd have a bunch of them.
Just so you know, clean up crew is not NEEDED. If you like snails and hermits then get some, but you can't rely on them to keep your tank clean. that's all up to you.