on heavier characters:
fthrow, uair, utilt, dthrow (the last step here only works on the heaviest chars, or people who dont DI away)
(and variations of this with less stages)
then follow with maybe an utilt, another grab or an uair if you can read your opponent.
on lighter characters, sometimes just fthrow to uair, sometimes not even that, though im sure everyone knows this
fthrow to hammer (at low %s)
good for mixup, and damage i guess, though generally comboing with tilts etc is better
fastfalled dair (from p. high) to ftilt/utilt (at low-ish %s)
good way to get to ground quick and ftilt catches some by surprise
fthrow to fair (at mid %s)
from roughly 40% till abit later (i dont know actualy %s), this is your best option from a throw, as no others can combo and this racks some damage.
dthrow to utilt (only works on fastfalling chars and only at low %s)
sorta useless really, fthrow to uair is better but mixup is always good, so on heavy chars you can sometimes get 2>3 utilts, though if the oppnent is any good they'll just DI away
dtilt to dtilt/ftilt
at low %s can be linked into one another. also, if the dtilt trips, you can fsmash (you can atempt it anyway, but good players will escape it)
stuff to bair
^_^ utilt, dthrow, upB, bair, uair..stuff leads into bair. *****es get killed.
fastfalling bair to utilt
since ffing a bair is pretty easy to see coming, catching them out with the quick utilt after works p good, though this is probably far too obvious to be useful, as most will just shield and move away, or powershield and retaliate blah blah