macOS Mojave brought easier logins with the Safari Passwords tool that syncs your passwords between your Mac, iPhone and iPad for easy logins. With recent updates it is even better.
In macOS 10.14.4 you get Safari autofill with Touch ID. This makes it easy to get access to your passwords in Safari and to quickly fill in the password when you need it.
This stacks nicely with the Safari and Messages integration for one time passwords or two factor authentication texts. When you get a text message that contains a two factor authentication message it will automatically fill in Safari. No need to spend time copying and pasting, it's just there.