Hi! The Pixelated and Toon options in Laigter are only for visualization.. that information cannot be exported with the map.
To replicate them in godot, for the pixel filter, you just need to import the textures with filter option unchecked.
For the Toon lighting, in godot 2D you need to write your own shader. I made a simple shader for my game with a simple toon efect. if you are interested, reach me at discord and i will share it to you. This is the discord link: https://discord.gg/88kJqry
It matters which engine are you using, because each engine has different features out of the box. With godot you have normal map, but no specular or others in 2D, for which you should implement shaders.
Also, for using with godot, remember to invert the y axis of the normal maps!