だろうと[思「おも」]う => I think probably A N4
Sentence Endings
といえば/というと/といったら => N3
Considering, Concerning
というものだ => Shows an especially strong conviction A of the speaker N2
Information, Report
というか~というか => (not sure if it's) A or B N1
Miscellaneous
うと~まいと,うが~まいが => Whether or not A (is/occurs) N1
Based/focused/depending on
てとうぜんだ => A is common, natural, not surprising N2
Adjectival, Descriptions
そうだ => Seem, like… N4
Situations and Experiences
だろう => Probably A N4
Sentence Endings
というより => Rather than A N3
Comparison, Exchange
と[言「い」]うのは => Means, is N3
Information, Report
ようだ => Looks as if A N4
Situations and Experiences
ようだ => Looks as if A N3
Adjectival, Description