ないものでもない/ないでもない => A is not completely impossible N1
Need/Requirements
もなんともない => Not A at all N1
Adjectival, Descriptions
なくてもいい => Don't have to A N4
Can, Should, Must
たいものだ => Want to A N2
Will, Decision, “Doing”
かいもなく => Even though A, N2
Contrast,Surprise
に[基「もと」]づいて/に[基「もと」]づき/に[基「もと」]づく => Based on A N2
Based, Focused, Depending on
てもかまわない => No problem N4
Can, Should, Must
ぐらいのものだ => Only A N1
(Not)only , (Not) even
というものではない => Not sure, not means N2
Information, Report
までもない => It's not necessary for A N1
Need/Requirements
ないまでも => Even if A isn't done N1
(Not)only , (Not) even
といえども => Even if A, even though A N1
Contrast/Surprise