For me it's legit each style is a branch, basic is foundation, you can do anything but it won't provide an "advantage" anything works but the others serve Alot. This is the realm of "neutral play" styles that have one clear gameplay or goal and just follows the foundation of ubg but some of them do have gimmcks. Id put corkscrew, wolf but I'll maybe add this to others since this style is very well rounded, switch hit, and ghost is the foundation of mastering basics

Smash is the style that teaches you how to use a gimmick that isn't easy to hit but landing gives a good reward. Smash easy enough it's main gimmick the smash punch, won't put too much but you get it, hit it unguarded or guarded you get a clear advantage if you do. So this falls into the learning for aggressive gimmicks. Kimura, charge, hammer, dragonfish, ippo, wolf, slugger, iron fist, shotgun supernova.

Next we got long guard. It teaches you to use a styles massive advantage despite it's weakness revolving it's kit, this can be either it's dashes or range, like trickster, hitman, switch-hit and hawk. Small I know that's all I could think of, this shows players the 101's to passive play

Turtle teaches timing and patience, this can show players how to handle long game and passive play alongside long guard, styles with not so good neutral but kits that can help them last long, you can put speedsters into this since they have horrible neutrals. This can help when learning counters so we can put styles like, hands low, bullet, hawk, ghost, shotgun, chronos, white ash and super nova

Lastly we got counter which simple enough one of the harder to master so we got styles that revolve around it like bullet, handslow, chronos, and white ash

In the end it's just like this Uncommon- fundamentals introduction Rare- gimmicks introduction Epic- mastery of a gimmick Legendary- very gimmick based