Will you ever consider having a ready to go package with your tilesets for Godot? Found a cool plugin from github that simplifies turning your tilesets into Godot's format, though it does take some time. (Worth noting the water animations are fully functional!)
It has an auto importer for A1-5 tiles, though for B-F I think you have to manually create the tiles, which is my only complaint for their plugin.
Would I be able to email you what I mean as an example of Godot ready assets? From my testing you can drag and drop them into any godot project with this setup and it'll work out of the box(bless the plugin creator, I could not figure out how to get the tiling setup otherwise)