Love your sweet platformers? Humble has launched the Adventures in the 2nd Dimension: Positively Playful Platformers Bundle and it looks like a good one. All the games included are rated well on Steam!
To save you clicking around below you'll see the expected compatibility for each title on Steam Deck and Linux desktop, along with any ProtonDB rating and noting any Native Linux versions available. Plus each is a Steam link, so you can go see more info on each if you need to.
Hoa - Deck Verified - ProtonDB Gold
One Hand Clapping - Deck Verified - ProtonDB Platinum
Pogostuck: Rage With Your Friends - Deck Verified - ProtonDB Gold
Super Bunny Man - Deck Verified - Linux Native
Toodee and Topdee - Deck Verified - ProtonDB Gold
Webbed - Deck Verified - ProtonDB Gold
Will You Snail? - Deck Verified - ProtonDB Platinum
Minute of Islands - Deck Playable - ProtonDB Platinum
Check out the full bundle here.