Godot 3.x will likely always be OpenGL for compatibility. Godot 4 has 2 Vulkan renderers implemented already (a clustered renderer for desktops, and a simpler

Godot 3.x will likely always be OpenGL for compatibility. Godot 4 has 2 Vulkan renderers implemented already (a clustered renderer for desktops, and a simpler renderer for mobile). C# support in godot 4 has been ported to .NET 6 CLR rather than mono and is in the process of being merged now.