Here are my notes on game engines. The ones i have used is Unity, Stingray and Unreal. I also keep a list of game engines over the years that i think have been cool.
TombStoneEngine - 2018
Urho3D - 2018
Magnum Engine - 2018
Xenko - 2018
Writing a Game Engine in 2017 - 2017
Game Engine Architecture Club - 2017
In Defence of Writing Your Own Engine - 2017
Gildor - 2017
WickedEngine - 2017
The Rendering Technology of SkySaga: Infinite Isles - 2015
Adventures in postprocessing with Unity - 2015
How Unreal Renders a Frame: Part 1, Part 2 and Part 3.
godot 4.0 gets global and per-instance shader uniforms