Uphill Supersonic!!!
Interestingly, most modern or not even modern Interceptors / Fighters can climb supersonic. F14, F15, F16, Mig29, Su27, Tornado even! (Clean). Certainly the Typhoon has difficulty NOT going super in the climb and the EE Lightning is just an older example of the same order of performance.
However, in most cases, supersonic climb is not the most efficient profile or doesn't generate the optimum climb rate/angle, so actually most fighters don't do it routinely.
But it's nice to have the choice!
PS: Harriers Can't....... Nuff Said.
Advo