そういえば => Speaking of .., A by the way, A; N2
Considering, Concerning
といえば/というと/といったら => N3
Considering, Concerning
そうにない => N2
Potential, Possibility
その[上「うえ」] => Not only A, but B (as well) N3
Not only, Not even
ばこそ => Because of A N1
Reason, Result, Response
かといえば => Although A is expected, B results N2
Contrast,Surprise
に[相違「そうい」]ない => No doubt N2
Information, Report
そばから => As soon as A, B N1
Time, Situation
それはそうと => By the way N2
Miscellaneous
そうだ => Seem, like… N4
Situations and Experiences
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([思「おも」]う、[言「い」]う、[考「かんが」]える) => That A N4
Particles