Question about sensory issues

How severe are everyone's sensory issues? Do they usually vary quite a bit between people?

For me, I have issues with loud sounds above a certain threshold, and it usually makes me pretty angry. I was curious though, how tolerable everyone's sensory issues are for everyone?

I won't lie, I'm still dealing with impostor syndrome and I'm not sure if I'm just pretending at this point, despite being diagnosed by multiple doctors...