Unreal and Godot seem to be doing a number on Unity from both ends. The higher end of the industry is going Unreal while the indie games and hobbyist are going Godot. I imagine this is also why Epic is a Godot donor.
Have there been any well-known games made in Godot yet? When I started with my first proper game which was released a few months ago I went with Unity because I couldn't find any successful examples and the knowledgebase was lacking in comparison with Unity.
Depends how you define well-known. The Godot showcase lists some of the popular ones: https://godotengine.org/showcase/. I believe Dome Keeper did $1m+ in sales with a 2-person team and I assume Brotato and Cruelty Squad are probably in 7 figures as well. So far, the hits have definitely been on the smaller side, but I expect things will change with Godot 4 being released. Another big factor is that most of the games released so far have been developed by tiny teams.
Apparently it was a remastered version, Sonic Colors: Ultimate - It's interesting this came out on the Switch since I'm pretty sure there is no official Switch support in Godot.