I am active on Yaesu System Fusion, DMR and DSTAR, M17.
I run a experimental XLX687 (DSTAR, YSF, DMR) reflector and dashboard at xlx.digitalradioke4qcm.wiki/, an experimental YSF reflector node at # 58936 and dashboard at ke4qcm.ddns.net and an experimental M17 Reflector # 894 dashboard at http://ke4qcm.zapto.org:3003/ and info at https://dvref.com/mrefd/m17-894
https://www.mikemyers.me/home/2016/2/19/d-star-dmr-fusion-which-is-right-for-you-7nhdl
http://www.wx4qz.net/Mode_Overview.pdf
https://www.qsl.net/m1dyp/dvswitch.html
https://n5amd.com/digital-radio-how-tos/create-xlx-xrf-d-star-reflector/
https://themodernham.com/host-a-ysf-reflector-on-debian-linux/
https://github.com/firealarmss/MMDVM_Reflector
https://github.com/firealarmss/MMDVM_Reflector_Monitor
https://www.youtube.com/watch?v=vaNkwi3FsaU
https://www.youtube.com/watch?v=geJbnrRYBTI&t=164s
https://w0chp.radio/digital-radio-lists/
https://www.hamdigitaal.nl/?wpfb_dl=194
http://www.kk4ib.org/digital-voice-modes%20compared.pdf
https://sites.google.com/site/ki4fvi/
http://georgia900p25.hopto.org:61001/w4noc-ki4fvi-MixedModeNetwork.pdf
http://ki4fvi.hopto.org:17000/supermon/link.php?nodes=535865
http://ki4fvi.hopto.org:17000/cgi-bin/lsnodes_web?node=535865
https://w0chp.radio/quadnet-talkgroups/
https://vk3tbs.home.blog/tag/opengd77/
https://www.youtube.com/watch?v=PB0nyc83GCw
https://www.qsl.net/kb9mwr/projects/dv/multi/XLX%20Multiprotocol%20HamRadio.pdf
https://www.qsl.net/m1dyp/dvswitch.html
XLX Reflectors:
https://github.com/PU5KOD/xlxd_installer (XLXD installation script)
https://github.com/n7tae/new-xlxd/blob/master/README.md
https://n5amd.com/digital-radio-how-tos/create-xlx-xrf-d-star-reflector/
https://www.youtube.com/watch?v=geJbnrRYBTI
https://www.youtube.com/watch?v=87f8cRYg3f8
Hotspots:
https://amateurradionotes.com/images/10-hotspots.pdf
https://files.tapr.org/tech_docs/DCCpapers/2022%2009.pdf