The younger generation actually tends to prefer the really retro stuff, like the big band music from the 30's and 40's. Of course, this tends to be fast swing music, more suited for Lindy Hop. But if you look around, I think you'll find that most of these retro swing bands have some slower tunes, too, and some of them are awesome for WC Swing.
Check the usuals, like Brian Setzer, Big Bad Voodoo Daddy, and you may be pleasantly surprised. Also, the Commitments Original Motion Picture Sountrack is pretty rockin, although not quite as old a sound.
I hope this helps.
Sincerely,
Jonathan Atkinson