There's lots of great stuff on those labels! There are some 125+ releases on Charay alone! The Pic & Bill 45s (15 or so of them) are all good soul and worth to track down, there are some nice Cresa Watson releases, there are some fine Willie Hobbs 45s on Soft. Plenty of good garage rock releases as well. Le Cam is probably most famous for being the original label for two gigantic pop hits, Bruce Channel's "Hey! Baby" and J. Frank Wilson's lovely "Last Kiss". Major Bill recorded and released anything he could make money off it seems, and the discographies for these labels are completely messed up, Major often re-used the same catalogue number to issue "new" 45s by the same artist but with a different flipside. There are for example 6 different Pic & Bill 45s released as Charay 60!!!
The Major Bill Smith related labels probably warrants a thread of their own. But in the meantime, here's an incomplete Charay discography:
https://www.capitolsoulclub.homestead.com/Charaylisting.html