metal/screamo? "screamo" has nothing to do with metal.
people new to metal usually think that way as they havnt been exposed to real metal long enough.

seems from the bands you like you should check out Acid Bath, they arnt similar but they were a band that helped me get into the heavier stuff.

or if you want to dive head first into some of the more extreme stuff check out:

Carcass
Death
Nile
Exhumed
Zyklon
Leviathan
Evoken
Tsjuder
1349
Napalm Death
Gorgoroth

all good bands that i liked when i first became interested with extreme metal.

then from there feel free to check out:

Aborym
Arkhon Infaustus
Abigor
Akercocke
Angelcorpse
Crystalium
Funeral Mist
Deathspell Omega
Neo Inferno 262
Negligent Collateral Collapse
Nortt