I'm about to test:
Galvantula, Togekiss, _______
my third is probably going to be from in game team since I haven't bred anything but those two>>15706825Ditto can pass IV too so if you don't have a decent male in the same egg group you can always use a Ditto until then.
My best is only an HP, Def, SpDef, and Speed ditto I'm borrowing from a friend but it speeds up a lot of my breeding until I can replace it with a better parent.