Standard? Is there really a standard? Every roster is different, after all.
While most here do want K. Rool and Ridley, they are still controversial choices, so it really is far from standard...
I can't see another Mario character with how many we already have, and there's no one else besides Toad, who's still Peach's meatshield, and Bowser Jr, who can go burn in the pits of hell and stay the hell away from being playable in Smash.
I've already said before that I don't think we're getting a new Zelda character other than a reworked Ganondorf, though there is the possibility. I know that you just want it to be Ghirahim though.
Too bad, Happy Mask Salesman time!
I do kind of like Golden's Wrestler idea, but I'm still not sold on a Rhythm Heaven character in general.
I would be hopeful for Lip, if her weapon wasn't confirmed to just be an item again. Still waiting for Takamaru though.