Scales of importance

Hi there,

I'm trying to make a list of 10 words to describe importance, in a scale from not important to critically important. I would appreciate your advice whether I have them in the right scale or not, from least important to most important. I'm especially interested in words that can be used in two ways - <word> importance, or <word variation> important.

For example, "No" would be: "No Importance" and "Not important"

The words I have so far, going from least importance to most:

no - not

marginal - marginally

minor - minorly?

small - smally?

moderate - moderately

significant - significantly

large - largely

great - greatly

dominant - dominantly

critical - critically

I'm fairly happy with this list, except "small" and "minor" don't work very well when you go to "important", and I'm not 100% sure each word is in the right place. What would be good replacements for those?