Was half-unconscious clicking around vendors and this one woke me out of my stupor. Not sure whether based or cringe. Model M case shape on a 65% with a proper curved PCB/plate. And being a bit larger than a regular 65 it'll probably sound a lot less bad. Optional top mount or gasket mount, can't find any graphic of the mounting points though.
https://novelkeys.com/collections/frontpage/products/curve-65-keyboard

Price is not bad, but no internal weight and layout is 99% fixed. But you get all the keys, no blocker. Hotswap tri-mode PCB only... yuck. 2kg assembled isn't terrible. 6061 aluminum... I'm trying to remember if that's bad. 6063 is the standard that you see on most stuff.

Can't find any info about who is making this, all I know for sure is it's a Chinese project, because they've got Chinese in their graphics.