ill agree with all except id 2 as a Micromussa Lordhowensis instead of Acanthastrea (a biological ruling change that happened recently) even though it seems the two are interchangeable within our hobby.
Try taking a photo with your blue/actinics off as it'll provide much better color rendering in photos. the montis could be some other form of chalice, per tidal gardens website "Several different genera of corals are represented as chalice corals ranging from Echinopora, Oxypora, Mycedium, and even Lithophyllon."