List of zone level ranges before squish

Is there any guide anywhere that shows which level each zone was before the level squish? I’m trying to play through everything in the EK/Kalimdor zones in order, but it’s harder to figure out what the correct story order should be when many of them now have the same level range.

You could look at the zones in Classic to get a general idea. Here’s a list.

There isn’t really a correct story order for “everything”, though. You’d hit 60 long before you could do that.

Even pre-Cataclysm there were multiple paths for characters to follow, at least up to level 30-ish: If you were a NE you’d probably do Teldrassil - Darkshore - Ashenvale - Stonetalon; if you were human you’d probably do Elwynn - Westfall - Redridge - Duskwood; if you were dwarf or gnome you’d probably do Dun Morogh - Loch Modan - Wetlands - Arathi. Horde side there was one path for undead through Tirisfall - Silverpine - Hillsbrad with maybe some Barrens thrown in; everybody else would go to the Barrens after their racial starting zone followed by some combination of Stonetalon, Ashenvale, and Thousand Needles. Around level 30 or so everything seemed to converge on STV but you started bouncing around a lot at that point.

You never had to do all the zones in order to level up. usually for any given level range, there were at least two zones. In fact, you could level 1-60 entirely on either Eastern Kindoms or Kalimdor.

There is no logical path trough the game to have a “correct” story order.
I would recommend watching youtube videos by Nobbel87 for story line and lore.
Bear in mind that there is no overarching story, just a bunch of shorter ones.