Metal music suggestion?

Here’s what I have on my Spotify playlist:

-3 Inches of Blood
-All That Remains
-Amon Amarth
-Angel Vivaldi
-Death
-Dethklok
-Dragonforce
-Dream Theater
-Epica
-Five Finger Death Punch
-Heaven Shall Burn
-Iced Earth
-In This Moment
-Jonin
-Judas Priest
-Kalmah
-Killer Be Killed
-Killswitch Engage
-Kvelertak
-Machine Head
-Mastodon
-Pantera
-System of a Down
-Testament
-The Big Four ;)
-Trivium
-Unearth
-Warbringer

Most of the bands I would recommend have already been listed, so I won't repeat them. But there are a few I think are worth checking out, even if they're a bit more niche in their subject matter and style. The Color Morale, Beartooth, The World Alive, and The Amity Affliction.

Maybe these:

• ReVamp (symphonic metal)
• Alter Bridge (alternative metal)
• Demons & Wizards (power metal)
• Primal Fear (power metal)
• Running Wild (heavy metal)

Oh good, it's not a Spotify playlist (since it is unavailable in my area).

Anyway, too lazy to check what others have suggested so far to avoid repeats so I'll just list a few of my favorites

Boris - Pink
Elecrtic Wizard - Funeralopolis
Mass of the Fermenting Dregs - She is inside, he is outside (just barely on metal side, but give it a go)
and my favorite discovery of 2016

Senyawa - Gaib

I have no idea what music you already listen to, can't see vids cause of internet cap. But I have some very unknown and awesome suggestions from my mainland:

More Than a Thousand » See "Black Hearts", "No bad blood" and "Fight your demons" for a sample.
Godog » NO VOCALS, instrumental with violin, epic! See "Disturbia" or "A vaca de fogo" for a sample.

If you like any of them, MT1000's first albums only have some hear-able songs (Low quality records and general musical composition, but some are still cool, I recommend if you really liked them, to get all songs and listen each to find those you like), and Godog only has one album with 7 songs, which is very sad considering their quality...
Take care!

Biber

Tengger Cavalry:

https://youtu.be/t7I2UR-HUwo?list=PLSIB1RzsHVL8ZcgVYQfWFgtXUvYjWdF8l

Sevendust, Thousand Foot Crutch, GodSmack, Evan's Blue, Korn

Yngwie Malmsteen - Neoclassic Metal.

One of my favorites: https://www.youtube.com/watch?v=ofUwxDsb424
Also listen to https://www.youtube.com/watch?v=G31n1ITApY4

Promised gibaway: http://www.steamgifts.com/giveaway/7qDx4/doom-ii

Bloodbound is pretty good Swedish power metal.
Alestorm is drunken scottish pirate metal.
Judas Priest is a classic. Halls of Valhalla is a masterpiece.

My top bands would be Gojira, Opeth and Lamb of God.
Also fond of Black Label Society, Ghost and Skindred.
And Anything with Max Cavalera involved tends to be at least decent

Update, here is a list of new bands I added to my playlist(I am still adding more songs during my spring break):

DragonForce
Gloryhammer
Stratovarius
Unleash the Archers
Manowar

**I forgot to mention I prefer power metal the most, but I do like any metal song with a really fast rhythm; something to make my blood pump.

Annihilator, avantasia, edguy, And i see you have Sabaton already covered :)

I'm surprised there's no Sonata Arctica on there!

They can do everything from super speed stuff like Wolf & Raven, or even ballads like this. https://www.youtube.com/watch?v=zbQZkqzh9p8

My absolute favourite from them has to be Black Sheep though.

Szarfaszú vizelet - CUTE!
Isacaarum
Satanakozel - Pivovar
Leshak - Chertovorot
Arkona - Yarilo
Fleshbomb
Anal Nosorog
Rage against the machine - Guerrilla Radio
Gutalax - Strejda Donald
Malignant Tumour
And no metal suggestion list wouldn't be complete without old men in leather

I hope my suggestions helped you a bit! :3