[notenoughbeans]

Native English speaker here.

I would interpret some one saying "my guys" in this context as a sign of respect. It can be roughly understood to mean "my go-to guy." It has the connotation of a well established, high-trust, working relationship.

For example, if I needed to get my car serviced and someone was trying to pitch me different mechanics I would say, "I got a guy" to indicate that I already feel looked after.