If it’s a bog standard private landlord in the US (no government involvement), I’m pretty sure they can’t actually check your salary via some third party tool.

They might verify that you work at the company you claimed but you could always tell your boss/HR it was a scam or identity theft.

Like the others said, a photoshopped offer of employment or pay stub should work. A fake contract letter with trusted contact may be easier to do though, especially since you have a business you control.