I don't know about all the auxilary raiders as most of then operated far from the Atlantic and while they were successful did not seem to arouse fear as they operated far from German waters. Because of that I don't exactly feel the Pinguin's part was all that great or any of the Raiders.
The same goes for Admiral-Scheer.
Bismarck's sortie brought attention and fear.
I mean some German bad luck as it that fatal Torpedo
that brought him to its demise.
While Tirpitz required big effort to sink I don't think that it is as great as the Bismarck.
I admire the U-47 venturing into Scape flow and sinking the Royal Oak.
Even if it did not have a big impact, it did bring some embrassment to the British.
The attack on Norway was great but with the losses of Blucher I feel less admiration for it
Cerberus was great, but I don't think it as nearly as much drama as the Bismarck or U-47
Wolf packs were great tactics but just did not carry so much fame and importance as the others.
In short I think It should be:
1.The sortie of the Bismarck
2.U-47 sinking Royal Oak