しかしながら => however, nevertheless N2
Things do not match the prediction
いまさらながら => Still ... now N3
Time
にほかならない/からにほかならない => nothing but; none other than ~ N2
~ぶんには(~分には) => as long as ~ N1
… とはいいながら => although, even though... N2
Invariant
…からいいが => never mind that, don't worry about that N1
Cause, reason
にしてからが => Even... N1
Demonstrate by example
~が ... だから => Because..so (Emphasis) N1
Cause, reason
とはいいながら => with these words; while saying N2
Emphasize
(の) なら~がいい => if; in the case that ..., you should... N3
Invite and advise
...が ...なら ...も ...だ => ... Anyway... whatever N2
Criticize
ながら(も) => but; although; despite ~. N2