The Universal Clipboard is awesome but im running Yosemite on the iMac
Synced Notes isn't a bad option but i hate any kind of Sync, im a manual type of user
I hope there are any kind of other solutions!
then typing manually is the only way.
on the other hand, for my money, Continuity and Hand-off benefits
by themselves have made them without question one of the best features that apple has ever implemented within its mac/iPhone environment.
and apple is increasing the integration of these two environments with using iPhone as an input device for the mac.
it used to be iMessage as the best single feature to keep me from thinking about leaving this.
but apple has gone way beyond this now to make it totally effortless.
long passwords, long passages, long numbers, photos, notes, certificates, email server settings, safari browser tabs.
there are no downsides to syncing these kinds of info.
apple watch and iPhone are
mobile input devices for a macOS device, or, for a larger screened iOS device, and, vice-versa.