First looks like green Acropora humulis
Second is Montipora sp. probably M. capricornis, looks like a season's greetings montipora
Third, hard to tell, but could be a chalice coral
First looks like Acropora humilis or Acropora florida. The orange tips make me lean towards A. florida (see AV99's Orange Crush Acropora for an example). The others look like Montipora species, possibly one of the many plating species or undata/confusa (but hard to ID at that size).