Theres been several different runs with different characters, i think just some of them are pika, mk, kirby, jigglypuff, probably others but im not positive haha
Different outcomes can happen with different character selection, but another thing to keep in mind about the category that it is a complete RNG farm.
Ya I know right I did my run with marth but it was slow. I tried with meta knight but to hard to rely on his up special. Jig is one of my wort characters
Choose what you think is best, but there are definitely better characters than others, I'd recommend MK (Easy), Up B timing is easy to get used to, Pikachus Thunder isnt very reliable in some cases of RNG.
MK is optimal for Classic, but is alot harder to be consistent with. Pikachu is very easy to use for all of them. Kirby is very heavily RNG based. but decent.