I've found my maternal gm on the 1920 census (I believe it's her although her name is spelled wrong. Everything else fits). I also found her SS death index.

Ive found my maternal ggm on the 1900 census.

I've found my maternal gf on the 1920 census and I've found his father's WWI registration card.

I've found my paternal gm on the 1920 and 1930 census's along with her brother.

I got stuck there as I don't know birth dates or states of births.