Interesting variants! And all raised hooves too.
The Pinkie one looks like Cherry Berry, with a Pinkie Pie symbol.
Heartstrings has purple eyes instead of yellow (Lulu Luck eyes? Trixie Eyes), and a Sunny Rays symbol.
Lulamoon looks like her lighter prototype, with a Fluttershy symbol and Starbeam Twinkle eyes.
Also, I wonder what's up with Crystal Empire? Maybe Cadance lives there?