F22/F23 motors are single cam, and they come in both VTEC and non-VTEC versions. The H23 is dual cam, but no VTEC. The H22 is dual cam, and VTEC. They all mount the same way and you can swap transmissions between any of them.
The S2000 motor is also an F22, but it's completely different then any other F/H motors, and cannot easily be swapped into any other Honda chassis.