I would be suprised if archive.today had something that was not in the wayback machine
Wayback machine removes archives upon request, so there’s definitely stuff they don’t make publicly available (they may still have it).
Trying to search the Wayback machine almost always gives me their made-up 498 error, and when I do get a result the interface for scrolling through dates is janky at best.
Accounts to bypass paywalls? The audacity to do it?
Archive.today has just about everything the archived site doesn't want archived. Archive.org doesn't, because it lets sites delete archives.