that appears to be:
HP U32 4K HDR Monitor
https://www.hp.com/us-en/shop/pdp/hp-u32-4k-hdr-monitor#techSpecs
it has DisplayPort, HDMI, and USB-C inputs
Your other display is also 4K and has
HDMI and DisplayPort inputs.
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What happens with certain multiple displays, is that the maker, did not take adequate care with what field the serial number is placed in, in the "Plug & Play" response information returned to the Mac. So your twin displays look EXACTLY alike, because they have (in the opinion of the Mac, that DOES follow the VESA standard) the EXACT SAME serial number!
You MIGHT be able to cheat by placing one of the Twin displays on HDMI instead of your LG display, but that may not solve the problem.
The real solution is to have the manufacturer update the display firmware to put the serial number in the correct field, and then your twin displays would look unique. -OR-
to get a different display so that you no longer have these BOTH of these defective twin displays on the same Mac.