そうだ => Seem, like… N4
Situations and Experiences
[次第「じだい」]だ => It depends on A N2
Based, Focused, Depending on
そうもない => The chances of A are very low N1
Potential, Possibility
そうにない => N2
Potential, Possibility
と([思「おも」]う、[言「い」]う、[考「かんが」]える) => That A N4
Particles
も[同然「どうぜん」]だ => The same as saying A, as good as A N2
Adjectival, Descriptions
てとうぜんだ => A is common, natural, not surprising N2
Adjectival, Descriptions
[謙譲語「けんじょうご」] => Humble form of A, humble form of する verbs N4
Honorifics
[尊敬語「そんけいご」] => Respectful form of A N4
Honorifics
もなんともない => Not A at all N1
Adjectival, Descriptions
に[相違「そうい」]ない => No doubt N2
Information, Report
[次第「じだい」]では => Depending on A, B may change N2
Based, Focused, Depending on