Arsis
Amon Amarth
Bodom
Cadacross
Callenish Circle
Dark Tranquility
Dethklok
Eluveitie
Ensiferum
Imperanon
Kaliban
Lamb of God
Light This City
Mnemic
Norther
Strapping Young Lad
Those are about it.
I have bolded the bands that are NOT death metal.
Eluveitie - Folk metal. They might have a melodic death metal sounding vocalist, but they aren't what I'd categorize as death metal.
Ensiferum - This is arguable. One one hand, they are a melodic death metal band, on the other hand, they are more folk than anything else.
Lamb of God - How in the FUCK can you say that LoG is death metal? They are modern day thrash.
Strapping Young Lad - Extreme Metal =/= Death metal. They have a lot of death metal qualities to their music, but they aren't death metal.
Also, one I'm not sure about is Light this City. I don't know what they sound like, but a quick google search says metalcore. So I don't know.
Best death metal bands:
Dark Tranquillity
In Flames
Gojira
Morbid Angel
Death
You have made some rather wise choices, my friend.