Earlier quoted context omitted.
As much as I love all the maps you mentioned, and could probably sketch their layouts from memory, I think Rust and Nuketown from the call of duty series are probably better known by a wide margin. Rust has been featured in 3 different games that had a combined sales of over 2 billion dollars, but even that is small peanuts compared to Nuketown. Nuketown has been featured in six different games, with 17 total variant…
By "six different games" do you mean six practically identical re-releases of the same game?
The two subfranchises, modern warfare and black ops do generally feel substantially different though. Modern warfare is generally a slog, but black ops can be quite zoomy, especially now that Raven software is working on them.