What is the record for the highest achieved landing speed?
If that's the case, Hauptmann Hetzel was one uped by an Israeli F-15 pilot named Zivi Nedivi, who landed his jet with only one wing after a MAC with an A-4.  The touchdown speed was estimated to be at 260 kts (300 mph, 480 km/h).  That's the fastest landing I'm aware of where the pilot lived to tell the tale.

https://theaviationist.com/2014/09/15/f-15-lands-with-one-wing/

Now the highest known approach speed during normal operations, I believe, goes to the North American X-15 research aircraft/spacecraft, which crosses the fence at some 211 KIAS (242 mph, 388 km/h).

https://www.nasa.gov/centers/armstrong/news/FactSheets/FS-052-DFRC.html

Also known to have very high approach speeds were the M2-F2, M2-F3, HL-10, and X-24A lifting body research aircraft with Vrefs in the 190-200 KIAS range.