Hello,
I am new here and exploring options.
Is /e/OS compatible with Samsung SM-G924R4? (this is an unlocked international version of the Samsung S6 edge)
Thank you
Hello, welcome in our community 
The list of all supported devices is at the following link :
https://doc.e.foundation/devices/
You can also find Unofficial build, made by the community here :
https://community.e.foundation/c/e-devices/unofficial-builds
If you don’t find your device, you can request support for it here :
https://community.e.foundation/c/e-devices/request-a-device