いまさらながら => Still ... now N3
Time
まだV-られない => Not yet ~ N4
Ability
ながら(も) => but; although; despite ~. N2
...が ...なら ...も ...だ => ... Anyway... whatever N2
Criticize
ながらに,ながらの,ながらにして => While A, during the condition A, Since A (point in time) N1
Time, Situation
~ながら、 => While A, B N5
Verb suffixes
しかしながら => however, nevertheless N2
Things do not match the prediction
たまらない => can not bear N2
Emphasis on degree
ながら(も) => Although A, B N2
Contrast,Surprise
が~なら~は~だ => If... is..., then... is... N3
Compare
なければならない/なくてはならない/なければいけない/なくてはいけない/なければだめ/なくてはだめ => must N5
~ようが...まいが => whether or not; regardless N1