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dav1d-
Brilliant
Low poly earth. The model in the previews uses 3 maps (1:Earth BaseColor / 2: Clouds BaseColor / 3: Ocean-Land Mask). I've used a 10K HDRI map made and shared by X_Joshi_X with a CC0 license.
The model is made natively in Blender, but you should of course easily be able to make it work in any 3d software.