I main Inkling and Lucina mainly because I realized Shiek really isn't that good except for the bonus level in what if I recall is classic mode, I haven't played Smash in a while
Plus I suck at playing Cloud and Greninja, two of my former psuedo-mains
Also, unpopular opinion, Clefairy would probably have been able to fit into Smash even though most folks wouldn't get why.
Think about it. It was going to be the original mascot for Pokemon, but it got replaced by Pikachu. Later on, Pokemon Pink was theorized and hinted at in yellow to be an unreleased game where Clefairy was the starter, but the game supposedly got cancelled. Pokemon Pink's existence was later on hinted by the Let's Go games where in the player's room, there were three plush toys: Pikachu, Eevee, and Clefairy, hinting that Clefairy was the third starter and the possible pair to Yellow that never was.
Up could be Swift or Moonblast, Down could be Metronome (replicates any other character's move randomly, could be anything except ultimate and Kirby's copy ability), Side could be Fairy Wind or something, whatever the grip is called could be Pound, Ultimate could be the full-moon evolution dance, etc.
Yes, I do be yapping when it comes to things that I think should or could be in Smash, how could you tell?