Ok, I have 4 old machines, one with a dual core 4 GB ram, it got the update. Wont discount the type of machine dictates when one gets the Update automatically, as stated, who knows what M$ thinks.
Oh asuming this update is from 22631.2428 to 23631.2506 thru Windows Update. he MIGHT be saying an update from 22H2 to 23H2
23H2 Enablment Package KB5027397 version is the same [22621.2355.1.1] or anything newer released today? EDIT: NVM, just checked, it's still the same version i.e. 22621.2355.1.1 from September 2023 release
on my 13th gen system I manually seek for update & still nothing here 'Get the latest updates as soon as they're available' toggle is ON