そうにない => N2
Potential, Possibility
そうにない/そうもない => very unlikely to; showing no signs of ~ N2
それはそうと => anyway N2
そうして => and, like that N3
Happens next
どうも ... そうだ/ ようだ/ らしい => It seems, probably N3
Speculation
... そうにしている => to look ~, to seem~ N4
Evaluate
そうかといって => but still N3
Beyond expectations
なぜなら(ば)/なぜかというと/どうしてかというと/なぜかといえば => because; the reason is; if you want to know why N3
に[相違「そうい」]ない => No doubt N2
Information, Report
それはそうと => By the way N2
Miscellaneous
そう...ない => very unlikely to; showing no signs of ~ N3
Reach level
そうして => and; and then; thus; and now ~ N3
Line up, list