The 1st ones could indeed be Jokers - purple center/green ring, however PHE; Purple-Hearted Emeralds have the same colors, but are generally smaller in size. As for the Yellow Hornets - there is no such thing as a yellow hornet in terms of being a true hornet; however, there is a vendor that sells some of the Deep Water zoas with a hornet name (I believe one of those is yellow hornets), so you may indeed have that, but its not a "true" hornet (alternating tentacles in the skirt of the same color as the thin inner ring surrounding the mouth). HTH - although it doesn't look like it has the colors I've seen for that polyp.