

Works fine

Runs well overall but the "Native" version installs an older version of the game than when using Proton.
Installation and gameplay via Native install works and, at time of writing, plays on an older version of the game. Installation via Proton has the latest version with some additional content but a minor issue where the TVs cannot display the news anchors.
It seems like the Native version had issues with the "Succession" mode whereby you could not prestige. Not sure if this is due to an older version of the game or is a Linux specific issue.
The dev notes in the Steam community discussions that Linux is receiving its own development path and can be enabled via the Steam game properties > Betas tab. I have not tested this but sounds interesting.
Overall game runs very well.
I use Proton-6.14-GE-2 currently but this game works with 6.13,6.12,6.10 too. No issues at all.
Had to explicitly select use Proton even though it was theoretically Windows only. Though after selecting that checkbox, no issues at all.