I agree Yavin Luke uses tac sculpt, but seems the arms are retooled and almost long like in dagobah landing vc 44.
This new head should be used for a new xwing pilot version of Luke, replacing the pointy chin.
Mara is decent, looks young and looks like emperorīs hand version too. She has got more detail on pants and knee pads.
The a wing pilot is likely army builder.
Rex is between cartoon and realistic style.
Bespin Vader is a concept lef in oblivion since 1999.