Need a little help identifing

[danielb333]

Need a little expert help identifying three corals. I think I identified based on pictures online but not sure. 1)maze brain coral
2) acan but he's not puffy/ fuzzy looking like the ones I see in pictures.
3) some type of entrusting monti looks just like a piece of chocolate though in my tank so not sure what's going on with him.
Any help would be appreciated thanks!