Yabridge is the way to go. I used to use LinVST in the past but with very mixed results. With yabridge, ~90% of my plugins work perfectly, including Native Instruments plugins which have always been my favourites.

There is a node for Y-sorting in Godot 3, is that what you’re thinking of? Y-sorting was rewritten for 4.0, so that node doesn’t exist in the latest version.

Your Godot problem sounds like you might have ordered your scene tree wrong. The scene tree reads from top to bottom, so if your interface elements are further up the list than the map, they draw first and then get covered up.