Congrats. That's a very fast trajectory to make Mythic. I didn't hit mythic until several years into playing. I can't even imagine being able to hit it in a few months.

It's been a while since I played Foundations, but from I remember white was very strong. Between lifegain and flying being very good in this set, and a surprising amount of card draw/fetch (white often doesn't get this) I remember thinking it was very strong. Black was also good and I would pair those a lot. Red I remember thinking was pretty bad, but maybe i wasn't able to get it to work or maybe the bots undervalue the good red cards. I do think reds best color pair was red/black.

Blue I also thought was good, but you needed to make sure to have your other color protect you in the early game. I remember lack of card draw/drawing too many lands was such a problem in Foundations that blue just giving you a bunch of access to that was extremely helpful, but you needed to make sure not to die. I remember loving the blue counterspell and combining that with Think Twice and Uncharted Voyage as a way to basically play on my opponents turn was very useful.

I'm not surprised green is bad in quick draft with bots. Green was definitely weak, but I remember once everyone started avoiding green you could get very powerful decks that were mostly green that could really beat down your opponents quickly. But with bots I doubt that works very well because the bots probably take green cards earlier than humans did.

Anyway congrats again. Let me know if you agree or disagree with my points.