Not a question that can be easily answered to be honest mate.
Basically your normal non-tech lines will have a higher diameter than the high tech lines on the market. i.e 5lb maxima has a diameter of 0.20mm as opposed to preston powerline 0.21mm having a breaking strain on 8lb 15oz….
I am guessing with you asking this you are looking at line for pole rigs or hooklengths? If so then try to find a line that you are happy with and stick with it. I and most people probably don’t even look at the breaking strain now and work by diameter as to what size fish you are expecting to catch.