On console: Mw2 150gb warzone2 115gb Mw2s “cod hq” for launching games 50gb (the only mandatory one) Mw3 seems to be about 190 looking at articles. (For campaign, zombies and warzone)
They’re starting to obfuscate where each thing comes from now with the Cod HQ Launcher to play off the size of the games. As well as let you delete components like zombies and campaign to “save space” that they hoarded.