https://github.com/linuxmint/slick-greeter/compare/1.6.0...1.6.1
The greeter sets its own cursor theme and size internally via GtkSettings. https://github.com/linuxmint/slick-greeter/compare/1.5.9...1.6.0
Basically Linux Mint related packages. Cinnamon 5.6 is likely to happen soon, I want to make sure no duplicate work is done.