The frist two are a bit too samll and the focus too soft, although the second has an interesting radial lip developement. The third is most likely A. valida, one of the tricolours. This colouring is common in Acropora and I have seen it in A. nana, A. valida, A. cerealis and a few not yet IDed. Always attractive. Also a culture note, they seem to prefer pretty strong light, otherwise they will go dark.