How to achieve direct window switching

Question

I recently got a Mac for work, and one thing is really bothering me. For windows and linux there is a concept called "direct window switching," which allows changing windows without regard to which application they are a part of. I typically have dozens of windows and apps open at once, but I'm focused on the 2 most recent image viewers and 2 most recent browser windows. Currently, in mac I have to use a combination of cmd+tab and `cmd+`` to switch between these most recent windows. On linux, I had a key combo that would cycle windows of all types, (not applications or windows of an app type). Is there an equivalent somewhere? I can make one using phoenix js if I really need to, but that's a pain.