also, as we learn the shorts released on the DCAMU/Tomorrowverse home media release seems to be canon. look at Adam Strange, Kamandi, Blue Beetle, The Losers, Nightwing and Robin I find it unlikely that Death & Sgt. Rock would be exceptions
THoM takes place immediatly after Apokolips War sure BUT it is recap by Johnny who said it to Nergal, There is no indication how long it is after AW except that it's pretty long after it but before Crisis
Belive it or not I am actually pretty deep into the MonsterVerse so what is that you have, i'll let you know anything else if you're missing something. I would be glad to help :)
I mean. Rise of the Beasts was always called T7 even on set. I just think, there is more indication it is one and the same timeline. reboot in a sense of tone but the same universe. for better or worse.