Hatunen writes:

To be picky, they're actually certificates, not licenses.

Same thing.

I'm not sure what SEL planes an ATR certificate would apply to.

One can have an ATP for all sorts of aircraft, and the ATP need not apply to
all. For example, you can be an ATP for multi-engine land airplanes, but only
a PPL for helicopters or seaplanes.

You mean ATPC, I think.

No, I mean ATP license(/certificate), ATPL.

Fascinating. Cite, please?

Pilot certificates are public records.