Kitchen items question

[ElAguila]

I am getting ready to make a new rom for myself. I have a WM shell that I want to run but it like memory. I want to make a rom that leaves the smallest footprint in ram. I was wondering if there was a list somewhere of which items in the kitchen will effect ram. I know how to tell the amount of rom that will be used by storage but I don't know which items WM will load when it starts. I am assuming that battery meters, keyboard skins, comm manager, phone, input panels, today themes and plugins(if activated), touch flo, and voice control. Is there anything else that will load with WM thus decreasing the amount of free RAM?