I've used grabber to get misc files every once a while, however, it does not seem to support e621 fully. There is no documentation for e621 specifically, and no native way to download pools in order, without relaying on the image IDs that is.
So, does anyone know of a working e621 downloader that works on macOS?
grabber seems to be the only one I've found that is fully cross-platform, other tools seem to be Windows or Linux only.
(and I know there are some tools for iOS and such, but I don't have an Apple Silicon Mac, so I can't run those. Unless I try playing around with the source code in Xcode, I guess)