Oh, I just wanted to add a bit of information. I'm a big Metroid fan so I'm very interested in seeing more from your guide. I wanted to add a bit of info on the suits, won't help much but if you add this, it will be an even more complete guide.
The Blue, the first costume is her original Jump Suit from Metroid Zero Mission where we get to see it in action. Some call it Zero Suit, which is fine, but the real name is Jump Suit.
The Dark Blue Jump Suit is thought to fit the Metroid Prime 2 Echoes Jump Suit since it's the darkest blue latex in which we've ever seen Samus. Although in Metroid Prime Hunters we get to see a very similar suit. It could be the same considering one goes after the other.
The Pink Jump Suit is considered Justin Bailey's pink suit you unlock at the end of the original Metroid. You know, the running around through an alien planet with a bikini after passing the game under three hours? Yeah, that ugly pink bikini.
The Black Jump Suit would have to be from
Super Metroid. After passing the game under three hours you can unlock the ending of Samus with a black jump suit. It's the only Metroid game where we get to see a black latex, so we can assume this is from Super Metroid. Although the designs are different.
And like you said:
Orange shorts from Zero Mission and Blue Shorts from Fusion.
The white and green jump suits have never appeared. Sakurai mentioned that the Green suit for Samus (with armor) was a custom color for her which has only been seen in Smash Bros. So I'm guessing the green suit was made to fit the team colors from previous smash games. While the white suit could be said to go with the light suit, but as a Jump Suit is has never been seen in the games. Maybe it's her latex suit from Metroid 2. You know, because the game was in black and white. Hahaha yeah... needed that Metroid humor.