Combos that have the same stats (or close enough, for the last ones):
>Nabbit + Baby Blooper
>Peach/Daisy/Coin Coffer + Mach Rocket/R.O.B. HOG
>Baby Mario/Goomba/Spike + B-Dasher/Hot Rod/Bumble-V
Now you can apply a little variety to your metafagging.