dPMR Ham Setup - Radio and Talkgroup ID's?

[[LCS]]

I have an Icom IC-F3162DT and a IC-F4162DT, both set for dPMR.

https://www.icomjapan.com/api/download. ... E2Mi5wZGY=

I'm located in the US. I'm having basically zero luck finding much about Ham Radio use of dPMR. I would like to experiment with the radios and thought I might as well go with some established guides lines if any exist.

Is there any registry for ID's similar to DMR and NXDN from https://radioid.net/? If not any pointers on generally accepted ranges etc.

Also are there any established, formal or otherwise, talkgroups in use?

Finally, are there any Ham dPMR repeaters anywhere? If so are they linked?