MCConfig adds a gui config that allows you to visually see all the Minecraft Gamerules and change their values in game. The config is only avaiable in game and in non-accessible outside a world. MCC does not change gamerules of servers and changes are persistent among new worlds, so no more having to stop the daylight cycle or stop entities from spawning each time.
And the config is dynamically created, so any new game rules, or potentially custom game rules should be shown as well.
Requires LazyModder 0.74+
The gui looks like this: