For me, rather than naming a generic pointy guitar, when I think "most metal", I think about specific iconic guitars that breathed fire when played by metal titans. Like Randy's Concorde, or Dime's Lightning Bolt Dean, James Hetfield's White Explorer, Kerry King's old B.C. Rich Bich or ESP Tribal V, Jeff Hanneman's ESP Heineken-Hanneman ESP or Soloist with white graphics, Michael Schenker's trademark V, Mustain's Jackson King V, etc.
These are sacred relics, wherever they are.
None more metal.