The following codes were not available as buttons on my remote for me to capture:
I have a 65OLED807.

Discrete On & Off
on: 5000 0000 0000 0001 0000 003F

off: 5000 0000 0000 0001 0000 003D

HDMI2 (the eARC HDMI on my TV): 5000 0000 0000 0001 0003 0004

HDMI4: 5000 0000 0000 0001 0003 0039

I captured these from an old Harmony 525 programmed as a 806 model remote (the actual remote is the same as my 807 which wasn't in logitech's db).

I captured the HDMI 1 & 3 codes too, but they didn't activate those HDMI ports on my TV but other inputs. Since I only use the HDMI2 on the TV these codes are good enough for me and I captured all the others I needed from the original remote.