I think I'll have issues with that style because there is no physical switch and the Xbox dumbs down to the lowest resolution screen.
I might to try this one next... Just looks the same as the others but it does say 4k HDR.
That lindy box you linked to says it is [email protected] that is a HDCP 1.4 device and will not work with Xbox One X @ 4K/60Hz/HDR.
This 2 in 1 with a switch button claims to support HDMI 2.0 and the product seller says it supports HDR too in the answers section, I think this may be your best option.
Did it arrive? I need to split my SKY Q signal into two, 1 direct to TV (4K) and one to Xbox One (1080P). Bloody Xbox One X doesn’t output from its TV HDMI Out in 4K.