Excellent post paying attention to the Polish Electronic Music scene, Craig
But I could easily double that list. You might wanna explore more at:

Cosmic Landscape*

Michel Milde*
but beware of his pre-order releases. Due to his fragile health, it might take him a lot of time to finish publishing. But he does make nice earworms!

Adam Certamen Bownik*
who puts his music on Bandcamp a wee bit too pricy (nowadays) IMHO

And do not forget MADIS*

And yet not very well known: Robert Holtzman*

Sadly no longer with us: E=motion*

And very unfortunately extremely difficult to obtain nowadays; Thomas Gruberski who has left Poland altogether.

All artists marked with * can be found on Bandcamp