Naw dio gets alot of respect from metal heads and you would probably like power metal if you like his stuff.I like gothic metal, but I dislike the poppier side of it like HIM and Evanescence. Favorites would be Nightwish and Type O Negative.
Also I really like what I've heard from Rainbow (and anything else with Dio), which is probably laughable to actual metalheads but whatever, I like that dungeons and dragons vibe.
Thats alot of good bands you listed and your lucky you get to amon amarth! I've been listening to alot of converge lately anyone else into them(although there metal core)\m/
Finnish folk metal like Korpiklaani and Finntroll
Industrial metal like Rammstein, Ministry, Pitchshifter, Misery Loves Company, Saposmitz
Old school metal like old Metallica, Iron Maiden, Black Sabbath
Death, Black, and Thrash metal like Amon Amarth (they're playing soon w00t!) Cannibal Corpse, Cryptopsy, Children of Bodom, Chimera, Lamb of God, Machine Head, Morbid Angel, Municipal Waste, Mayhem, Obituary, Onslaught, Rotting Christ, Sepultura, Soulfly, Soilent Green, Skindred, Slayer, Zyklon.
A big part of the reason I moved to this city is that bands actually play here (unlike being stuck in the sticks). Since I moved here I have seen most of the bands on that list, and a whole lot more besides