Hard to tell 100% with the last one as the radial corallites are not very visible. But I'm pretty sure it's Acropora Tenuis.
Ps. colour has nothing to do with ID. Acropora Hyacinthus is mostly common as brown, pink or red (or at least in Norway it is), but you can still find green and probably yellow as you say yours are (even though I suspect it is a bleached green as yellow is very uncommon)