ところだった => About to… N3
Will, Decision, Doing
までだ/までのことだ => Only A (will be done) N1
(Not)only , (Not) even
といったところだ => Display an amount/level/degree A (程度) N1
Degree/ Level/Amount
[事「こと」]だ => A is necessary/good (offering advice/suggestion) N3
Needs, Requirement
てとうぜんだ => A is common, natural, not surprising N2
Adjectival, Descriptions
だろうと[思「おも」]う => I think probably A N4
Sentence Endings
ことだから => Shows a typical trait or characteristic of A N2
Information, Report
というものだ => Shows an especially strong conviction A of the speaker N2
Information, Report
ただ~のみだ => Only A N1
(Not)only , (Not) even
だらけだ => Lots/tons of A N2
Degree, Level, Amount
くらいだ/ぐらいだ => Around/about N5
Amount
[次第「じだい」]だ => It depends on A N2
Based, Focused, Depending on