In no particular order:
Ryuichi Sakamoto (particularly Async, and his albums with Alva Noto)
Aphex Twin
Apparat (though he does also feat singers on some albums)
Four Tet
Squarepusher
Γrdrop Wolkenscheidt
MGMT
Sevish
Matt Elliott (very few sung bits)
Paco de LucΓa
Guilhem Desq
Jordi Savall
Ledetraad
Bremer & McCoy
Athletic Progression
Psykovsky
Godspeed You! Black Emperor
Kettel
Secede
R mccarthy
Sungazer
999999999
Susumu Yokota
Caravan Palace
These do fall into the vg category but it's more edm / retro than "epic orchestral":
Scattle
Chris Christodoulou
Toby Fox
The Toxic Avenger
Jake Kaufman