I also love the soundtrack so much and have listened to it thousands of times, especially By The Wall, my favorite song. PS: Thanks for posting the composer’s solo name, Floex, because there were (are?) two people with exactly the same name working at Amanita Design, bizarrely!
I bought the soundtrack on vinyl (by Tomáš Dvořák, aka Floex), then got a record player, aaaand ended up accumulating a ton of records since then.
I still play that record though, it never gets old.
The other game that we enjoyed in a very similar way is Primordia [1]. Named our first cat Crispin afterwards.
You will probably enjoy Boxville [2]; it's very much Machinarium-inspired. Its sequel, Boxville 2,came out recently, so there's more in store.
It's Ukrainian-made (Machinarium is Czech), so the devs share a gritty post-communist childhood to draw the inspiration from.
[1] https://primordia-game.com/log.html
[2] https://store.steampowered.com/developer/triomatica