After testing dozens of boxes, here is the final verdict:
EmuELEC is technically built on the (64-bit ARM) architecture. Since the Raspberry Pi 3, 4, and 5 use this architecture, EmuELEC can run on them. However, it is not the primary development focus. emuelec supported platforms best
However, EmuELEC is not "one size fits all." Compatibility is heavily dependent on the hardware architecture of your device. After testing dozens of boxes, here is the