In the german Wikipedia (not in the english), I found the following:
Im Computerbereich hat ab etwa 2016 der DisplayPort den VGA- sowie alle Varianten der DVI-Anschlüsse abgelöst und ermöglicht dank deutlich gesteigerter Bandbreite höhere Auflösungen (4K, 5K) mit einer größeren Farbtiefe in kompakterer Form.
Translation: For computer purpose, since 2016 the DisplayPort replaces all VGA and DVI variants and has a much extended bandwith which enables higher resolutions (4K, 5K) with higher color depths in more compact form.
That means, HDMI is the entertainment standard, DisplayPort is the new standard for computer graphic cards and screens.
Is it correct that the way of the connection does not matter for the graphics driver software, because of the chain:
OS Software -> OS graphics software -> video card/chip -> cable -> monitor ?
If new hardware supports both (computer and monitor) DisplayPort, I assume this should work with ArcaOS.
...But even my brandnew AM4 mainboard has no DisplayPort... It seems that only midclass graphics cards do have it, and only a few motherboards. But nearly all monitors do have it. 70% of all new monitors do have DisplayPort, but only few mainboards/graphics cards. It seems that HDMI temporary fills the gap.