Are there any resources that compares the severity of stammering in levels?

Are there any resources that compares the severity of stammering in levels? So, I'm looking for resources that would show me the range of stammering severity, ideally from least severe to most. I'm not sure if such a thing exists, but I'd be very curious to see where I feel I fall within the spectrum of stuttering severity. I'd say that I have very little problems around 80% of the time (usually a small intrusion in most conversations, but not really limiting my speech). The rest I either have severe blocks will repeat words/phrases, or I'll just completely be stuck on the start of a word for a prolonged period.