What Pokemon type has more of not very effective, No effect, Normal effect and the least Very effective?
(Sorry if it is hard to under stand... I don't know a different way to word it.)
You should look at the type chart on this website. It explains much better.
I guess you mean what Pokemon type is the least effective in battle?
It'd be Normal type; it's not super-effective against anything, resisted by Steel & Rock, and has no effect against Ghost.
Click for the type chart.
No, I can't understand what you are saying but if it has to do with damage levels, the type chart is there to help you. :D