Are desktop builds from fe_release (such as 20277) client compiles of Server 2022 or something else? They appear to be empty builds... Are very stable / snappy. Moreover, what was the purpose of this Iron branch?
Server 2022 LTSC = fe_release (ferro = iron). Server 2022 LTSC thread: [DISCUSSION] Server 2022 LTSC (21H2) 20348.1 (fe_release)