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Ok then, I think I have everyone in Radiant Garden here.
Anorgos(Seph2) and Kuraixo(King Sora) are in the more deeper parts of RG, that entire area was the location for them fighting, so there would be clear signs of their damage. At the moment, I think they should be leaving the world soon.
Xyru, Max, Huey, Rysto (All Sol's) are in a part of RG, where the refugees from the worlds that have already been taken, are arriving, with them just there to pick up supplies. This was also the last post Sol did befor ehe had to go. Lerane (Angel's character) is also there as well with Sol's characters in the exact same place.
Isabella and Allegretto (Alphonse224) are in an area possibly in the middle between these two locations, Isabella was fighting and has formed her second keyblade I believe if I read the post correctly, and Allegretto has just tried to introduce himself to her.
I think that is everyone in RG, if I forgot anyone, sorry.