Malphite is more of a heavy AD auto attacker counter. With some cdr, his E and Frozen Heart / Randuin you'll literally slow them down to like 0.5 attackspeed.
the main problem i see with making any kind of tier list for dominion is that it all depends on your team composition. It'd probably be easiest to divide them into categories from best to worst. Then you have to consider certain builds as well.
Like best to worst
AP Bruiser -