Prime All Might should easily be hypersonic just by scaling up. We've seen that he can ignite the air around him like a meteor (in the film you showed gifs from) which is around mach 20 if I recall correctly.
Yes, it's actually above just hypersonic. Others have mentioned that a quirk called Overclock exists in the side manga. Even if the base speed of composite was only mach 1, it would be able to reach two digit mach speeds with that quirk, or even triple digit mach speeds.
Composite MHA is at least hypersonic and is actually a lot faster than most probably think.
All Might in Vigilantes is already hypersonic. Then you stack on Overclock which multiplies speed by "X" amount, and you can get some absurd speeds. At the high end of Overclock, it can give you a 300x boost. If the base speed of composite is only mach 5 (from All Might), then it'd be able to achieve speeds of mach 1500.
Thats just two quirks, there's several other speed and strength boosting quirks, and plenty of multiplier quirks.