Here are the opple readings of a LG revision HP omen 27q 2023 monitor.
When you buy this monitor there is two revisions.. one uses a BOE panel which is BGR subpixel layout while another revision uses an LG panel that has RGB subpixel layout. You can tell which revision you get by looking at the box, it's noted with a revision. If it starts with B it's BOE and if it starts with L it's LG. This monitor supposedly is true 8 Bit.
I haven't put this monitor to the test yet with actually using it, waiting to come down from a flareup.