Macroalgae clean up crew?

[caveman28]

Hello everyone, as the title states i'm looking for a clean up crew that'll be safe with macroalgaes in a 20 gallon
so far i have red grape algae, gracilaria hayi, feather caulerpa, caulerpa prolifera, and some augophyllum wysorii. i plan to have like 1 or 2 soft corals along with those macros but i havent decided what yet.
I'm open to any suggestions and advice!