Green Explosion and Green PE are pretty new names. Someone just came up with these names and registered them with ZoaID site for fun. They are not taxonomically different from other palythoa or zoanthus. I just used these names to give you some idea of what yours look like or don't look like in this case. I don't know if you can find an exact match for your zoas.
Until Blane Perun of The Sea.org started marketing his zoanthids using names like his now famous PPE four or five years ago, zoanthid had no names other than their genus: Zoanthus sociatus, Z. danae, Palythoa, Protopalythoa, Parazoanthus, etc.
Tomoko