I’ve tried a few different 509t holsters, but the ANR Design is my current preference. Their Nidhogg series is on my belt for the full size 509t and one of their IWB holsters for my 509ct.
What exactly are you looking for? According to their holster finder, they offer; 29 holsters that fit the standard 509 without a red dot or light, 22 holsters that fit a 509 with a red dot and a light (18 weapon light options are available), 32 holsters that support a 509 with a light but no red dot, and 2 holsters that support a 509 with a red dot but no light. I didn’t check the 509 LS edge, 509T, or 509T compact- which show up in the drop down menu as well. I’d be surprised if any holster manufacturer offered more support for the 509.
That said, I’ve not been super impressed with their concealed carry options, which is why I said “outside of concealed carry…”