Which LTE/5g modems/routers supports flawless bridge mode/passthrough

I live in a location with no decent cabled internet, so I am looking at a 4g/5g solution as this should give me a decent speed over my cabled alternatives

But I need an unfiltered, 100% bridge/passthrough solution where this ISP public IP passes through un-NAT'ed to my internal firewall.

I read somewhere that Nighthawk M1 can do this - M2 seems newer (and can handle Cat20), but I read a lot of posts in here where users complain that it really can't do bridge mode. Answers indicates that a firmware fixes is, but it seems that not after 2-3 years, people are still complaining about the samme issue.

Should I stick with M1?

Or are there any better Netgear 4g/5g solutions, that can do this? Or other products than Netgear?

My ISP told me that the ORBI can... but as fra as I see, they can't - at least not on the 4g/5g side.

Regards, Lars.