One more thing:
I think Bruce-era Iron Maiden and post-RTL Metallica are two of the most overrated things in metal
Did heavy metal after NOTB, Powerslave, RtL and MoP sounded like Paranoid album or rather like Maiden+Metallica combined?
its influence is rarely as obvious as Priest's, Exodus's, Sabbath's or Slayer's
Most of the bands after 80's played more similar to IM than to bands you mentioned. Pokolgép, Turbo, Grim Reaper, Sortilege, even today's Slough Feg sound like Maiden. Maybe should I mention their influence to power metal? Or prog metal? And by the way, half, if not more, bands influenced by Exodus are influenced by the same amount by Metallica.
It just looks like a bunch of random "hits"
Did you expect to see World Circus by Toxik because of its glorious riff and influence to technical metal? Or Messiah by Hellhammer? It's influence to extreme metal is undeniable. But these songs themselves aren't as impactful as 'hits'. Wasted Years made much more impact on metal scene than any underground song out there. And the word 'random' is out of the place here.