I always have felt knowing those names isn't really important just so long as you know enough terminology to explain the trick, it's all just local lingo anyway. Travel to different countries/scenes and you'll quickly see how many different names skaters have come up for the same tricks.
To the people saying there's no such thing as a switch nosegrind; popped switch, would you then call the trick a switch krook or a fakie suski? Also, popped switch, is it a fakie tail or a switch nose?
This "Spanish grind" too; just for clarification, are you all saying the second rotation is in the opposite direction of the first or in the same direction (so the skater completes a 360 rotation during the trick?