In sequence of preference:
(classics/Henkei)
Ratchet
Ghost Starscream
Sunstorm
Sideswipe
Various Legends - Jetfire, Menasaur, Bumblebee, Soundwave, others....

(Genrations/United)
Scourge

WST Soundwave,
HOC

Already Have
Wheeljack - thru UltraMarginal
Kup - thru Ultramarginal
Devastator RID - thru another Forum - waiting for arrival