めったにない => Rarely N3
Degree. Level, Amount
ところだった => About to… N3
Will, Decision, Doing
したがって => Because of A, B N2
Reason, Result, Response
といったらない/といったらありはしない => Extremely A, Very A, A beyond description N1
Degree/ Level/Amount
にわたって/にわたり => Over the course of A (continuous action), Throughout A N2
Time, Situation
といえば/というと/といったら => N3
Considering, Concerning
にあたって/にあたり => At the time of A (which starts now).., on the occasion of A N2
Time, Situation
[全「まった」]く~ない => Not A (at all; even a little bit) N3
Not only, Not even
にいたって => As for A, when it comes to the example A N1
Considering/ Concerning
に[沿「そ」]って/に[沿「そ」]い/に[沿「そ」]う/に[沿「そ」]った => Along with A; In line with A N2
Based, Focused, Depending on
といったところだ => Display an amount/level/degree A (程度) N1
Degree/ Level/Amount
としたところで、としたって => Even from the perspective of A; Even in the case of A N1
Considering/ Concerning