Third looks like cyphastrea. First two aren’t what I’d call beginner corals though. They’re easy for sps but can be a little trickier than your basic care corals.
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20 Gallon SPS reef
29 Gallon FW "fat catfish" tank
20 Gallon Long Dart Frogs "Zig" and "Zag"
I have 2 hydra 26s going as well has 2 Nero 5's on opposite ends of the tank so flow and light shouldn't be a problem its just find out what they like and keeping water levels as pristine as possible.