Those already using Keyboard Maestro will find that its built-in Clipboard Switcher is awesome and has all of these features. And you can set up a custom system

Those already using Keyboard Maestro will find that its built-in Clipboard Switcher is awesome and has all of these features. And you can set up a custom system-wide shortcut … with Keyboard Maestro. My preferred shortcut is Meta + Q. (I use Karabiner Elements to set Caps Lock to Meta while pressed, and to Escape when tapped. And I also use it to set Right Command + H/J/K/L to work like arrow keys. Makes flipping through the clipboard history a breeze.)