Sandy was originally a lesson pony but was then bought and became an excellent hunter jumper. She is a light palomino with dapples, a big blaze, and 2 socks on the front
Oakley

I imagine Oakley as a 15.1hh buckskin mare that has beautiful dapples in the summer time and her coat shines like the star she is. She has no white markings expect for a dab of white on the tip of her nose. Her mane and her tail is jet black and incredibly long and well taken care of. Oakley excelled in western pleasure, but she’s retired now living in a lush field with a gorgeous dun filly at her side (not a brood mare, but needed her bloodline to carry on).

What about the name Malibu?

IDK why but Malibu is a seen it all done ne it all buckskin quarter-ish gelding. A little too stocky and thic to be truly athletic or amazing at any one thing but able to do just about everything pretty good.

Oliver

(No pressure but I had an Oliver in my life and if I'd have been able to buy him my life would have been totally different but what's a 13 year old to do)

Oliver is a bay dun American Appendix horse. He has a thin blaze that starts at the top of his forehead and ends on his muzzle. He has white stockings on all of his legs except for the left front, which has no white on it. This athletic horse was bred to be a barrel racer, like his dam and sire, but proved to be better at reining. This 15.3 hand gelding is great for beginner riders and advanced riders. He loves his turn out time and loves to be around other horses. This boy has a lot to teach to those who want to learn.

Next name: Terminator

I think Terminator would be a bay mustang stallion who can never be tamed, but lets this one girl ride him.

Next name: Jupiter

Well how can i resist making Jupiter a red roan draft warm blood cross so he is a tall thick boy and is a bit on tje pushy side, not bad and not quite rude just assertive and opinionated.

Let's keep the theme and go

Venus

I see Venus as a mare with a rather aloof personality, maybe a yellow dun Ahkal Teke. Very elegant.

Winston?

Winston i would see wiston a a small pony such as a Shetland pony or extremely small horse breed

Cheyenne

I think Cheyenne is for a dun overo marwari mare.

How about amaia?

I see Amaia as an elegant, lean fleabitten gray Arabian horse mare who excells in dressage. She can have a bit of a temper sometimes, but usually is pretty nice.

Koda?

I think Koda would be a 16-hand paint. He is very energetic and works at a horse camp in summer and a cattle ranch when not at camp

sorry keep forgeting mine, Finch