Uses Shader Graph shaders, should be easy to retarget to URP or HDRP.

The Shader Graph can be downloaded via the Package Manager.

Change to URP or HDRP

1. Double click the shader file and opening the graph editor.
2. In the Graph Inspector Settings
3. Add or change active targets to Universal or HDRP then click Save Asset.

Fly

Low version - 72 tris

Regular version - 166 tris

Bee

Regular verstion - 180 tris

Low version - 78 tris

Firefly

Regular version - 182 tris

Low version - 80 tris

Shader Graph for the Built-in pipeline is only available for Unity 2021.3+