Continuing the anecdata collection, I'm in the over 1GB club. One instance of Slack, six of Slack Helper, several of which using 200GB of memory, but the biggest being 1GB. Timely thread, since when I sat down this morning and unlocked my computer, I was warned that I'd run out of memory and needed to quit some apps.
I really, really hope you mean "200MB", although I honestly wouldn't be surprised if they managed to use 200GB if accidentally started on a beefy server.