I am not aware of a list of those who would have earned/qualified for the wound badge for service in Spain. I do know of three: Lt-RKT Walter Fromm (LW-Flak), Lt-RKT Otto Bertram (LW-Pilot), Hptmn-RKT Hermann Hogeback (LW-Pilot). My online searches acknowledge their wound badges earned in Spain, but don't provide specific award dates.
Of the 183 badges to be awarded for service in Spain, 182 were in black, and one in silver. No gold badges were earned/awarded. I could be wrong, but Otto Bertram might be the silver winner, as there are period photos of him wearing a first pattern silver wound badge, and my research indicates he did not earn a further wound badge after the start of WWII. But again, no specifics on when his wound badge was presented.