135's that I can think of:
Tulsair
US Aviation
Flight Concepts
Omni Air Transport
Premiere Charter
Solaeris Corp
Air 1st Aviation

In the past, Airnet, Ameriflight, and Air Central Southwest have all had runs in and out of Tulsa for freight. I don't know if either one does now. Air 1st is also a freight op, I believe. All those other places are mostly passenger. But the market for pilots is pretty grim in Tulsa unless you want to flight instruct. Spartan is currently looking for instructors.