Hi Diego,
How about an Intellijel 1U Dual VCA at 8 HP?
Or a passive LPG 1U module from Intellijel at 6 HP?
Some more modules from Intellijel at 10 HP or less: 1U FSR, 1U Headphones, 1U Line In, 1U Line Out, 1U Pedal I/O Jacks, 1U Stereo Line In Jacks, 1U Stere Out, 1U Stere Out Jacks, 1U USB Power, 1U XY IO or 1U µMIDI Jacks.
Then there are 1U modules from Mosaic (those 10 HP or less): 1U Clock, 1U Line Input, 1U Line Output, 1U Sample/Hold or 1U Tap.
Also Ritual Electronics has 1U modules that fits your 10 HP requirement: 1U - Flexibilité (audio interface), 1U - Krach (noise) and 1U - Pointeuse (switch). This guy from Ritual Electronics is completely a cool guy, I met him at the Superbooth back in 2021. He makes some real interesting modules. Check out that Altar filter module, wow! That filter can make some real great noise :-)
Ah yes, Shakmat Modular also has two 1U modules: Tessitura Tailor and Time Apprentice (clock divider).
Bad luck with the VoicAS modules they are 12 HP :-(
Anyway, I think that should be enough choice to keep you going, right? ;-) Good luck with filling up that 10 HP 1U gap, have fun with it and kind regards, Garfield Modular.