LINKUP has a 75cm one, as far as I know those are good quality but do look them up yourself.
Worst case you can string a few risers together - Linus Tech Tips used a few of those risers you linked and got over 3m
SSUPD Meshlicious should fit your needs.
The riser they use, by LINKUP, is also available alone so you can order one of those. But you need to check case compatibility.
A comment on H1: it's been recalled for being a fire hazard (GamersNexus covered it on YouTube).