For Sol, simply input:
X > 6X > 2X > A+X
For Valentine, if I remember correctly...
4X > X > X > jX > jX >jX > air dash > [8x > jump] xn
4X > X > X > jump > [8x > jump] xn
You'll only get around 300 max for her loop.
As for the player matches video for each character I was going to make, I realized that it'd mainly be just words in a video with little gameplay in it. If you'd like, I can give you my opinions each character's item, gameplay, etc.