Yeah I don't like jumpscares either, but thankfully there don't seem to be many in this collection. I've played a few and so far Heliwald Loophole seems to be the most jumpscarey one. Janitor Bleeds also has some sudden noises, but they're a bit milder.
Seemingly jumpscare-free:
Agony of a Dying MMO, That Which Gave Chase, Echostasis, Lorn's Lure, The Lunar Effect, Chasing Static, Pathogen-X, Risu, Mummy Sandbox, The Chameleon, Fiend's Isle, Ghastly Goodies