https://github.com/GodotECS/godex
I haven't used it, though I've been curious about it. As far as better options for ECS game engines go, I'd go with Bevy (personally), but you'll have to learn Rust (which I'm a proponent of anyway).
https://bevyengine.org/learn/book/introduction/
But both of these are still in "Beta", if that's even the proper term for their development cycle, at this point. They work, technically, but they could use some help, to my understanding.
The 3D support will be significantly overhauled in 4.x https://www.youtube.com/watch?v=DNJXkcQxXEg and additional enhancements will reduce the need for DOTS/ECS for many. There's also Godex https://github.com/GodotECS/godex that adds ECS to the engine.
At the moment Godot is really only viable as a 2D engine, as it tends to bog down when used as a 3D game engine even though it has all but replaced the default Blender engine (their recommendation). So in order to get a viable 3D project, a user would have to use an experimental ECS version (no offense to the creators, they are working hard and I do have high hopes for this project. I'll most certainly be experimenting with it) using the C# version, which is still fairly new.
Now, the fact that a small group of devs can make an indy project/proof of concept with Blender and Godot, or students can make a group portfolio that is viable - these things are AWESOME. Granted. But it still comes out of a quasi Frankenseinian lab as they have chosen to go with OOP instead of ECS, it seems, even though a path does seem laid out before them.
P.S.
here's the link to the ECS project: