Is this a stocking help thread or are you just interested in what’s in our tanks? If it’s the former I’d be happy to give you some advice, but if it’s the latter, all I have is 7 CPD’s and 5 ammanos. A simple but very enjoyable tank!
I recently set up a 10 gallon for my niece and it has three guppies (a mother and her two daughters who are the survivors of what I'll be calling the guppy epidemic of 2018) and three nerite snails. I also have a 5.5 gallon guppy fraternity containing the father and three male survivors, along with some amano shrimp and a nerite snail.
I have a school of 6 harlequins in my 20 tall and you're right about the personalities! I hope to up the school to about 10 soon and add a female betta.