Do you have any pictures without the actinic lights on? Its hard to say what they are with the pictures being so saturated with blue.
But I would agree the first coral is an Acan, is the second one a stony or soft coral?, the third one might be GSP as optionman mentioned or if its a stony it could be lephastrea or hydnophora, and the last one looks like gorgonian (sea whip)
If you get better pictures though it would help a lot