Hey, I have never denied that there is a "Teutonic" element in DP's music (which btw Led Zep's music totally lacks, from a German viewpoint that is "sloppily engineered")!!! It probably stems from Blackmore's germanophile character, his love of German classical and renaissance folk music, his longer stays in the country, his German first wife - he was after all the chief songwriter of DP. Rainbow was even more Teutonic than DP in my ears - too Teutonic for my taste in fact, they already began to sound a little stiff (something Jon Lord and Ian Paice would always prevent from happening with DP). It's not a coincidence that DP ruled the seventies hard rock market in Germany like no other band, Zep included, DP's music appealed to something in (nearly all of) us.
Judas Priest is btw "Teutonic sounding" in my ears too - it's well-engineered music. It's something that appealed to me immediately first time I heard "Sinner, Sinner ... Sinnnnneeeeerrrrr!" blare out of the listening in headphones of a record shop and almost creamed in my pants.
Iron Maiden? Not so much. And if you "Teutonize" Priest just a little more, you end up with this here:
And to bring things full circle, where did Wolf Hoffmann of Accept get the little melody from he plays at 5:11? Listen here at 4:19 ...