Are clones, spiders, sharks a Unit? Why yes, yes they are. So yes, Sasuke does get scaling with those. You probably cant see it because he does not innately have that ability (skill Trial).

ah actually it doesnt count, my friend and i tested it. I have that skill trial that gives 10% for every unit, and i tested it against deidaras spiders and narutos shadow clones, from round 1 till round 5 his dmg against the enemy pos.1 stayed around the same 3-4k, depsite me killing like 15 spiders and clones meaning that it should have bumbed it up to around 8k

Sasuke Susanoo scales off of dead ninjas. Only. No summons, puppets or clones.