Hey all!
Thank you everyone for your help!
Strangely, Open Stage Control still wouldn't give me more than 8 track names, even when using the "default" "logictouch" and "logicpad" .ReaperOSC configuration files.
I then used the following Lemur.ReaperOSC configuration file and the names of tracks above 8 ended up working!
https://forum.cockos.com/showthread.php?t=98673
Seems to have sorted itself out using this config file, but won't work otherwise oddly.
Thank you all again for the assistance!