Level 42, I think I received 4 (or 5?) common chests, 24 epic chests and 2 veteran chests.
Common chest loot (4 or 5):
Sylvanas
Succubus Kerrigan
Demon Hunter
Kaldir Zerg
One portrait, various voice lines, sprays and some emojis
Epic chest loot (24):
Muradin
Chen (copy, converted into shards)
Abathur: Kaldir
Alarak: Bone Herald of N'Zoth
Artanis: Crimson Purifier, Hierarch
Arthas: Dalaran Prince
Auriel: Sakura (got it twice, second converted into shards), Archangel
Brightwing (don't have her): Flying Monkey (mega ugly)
Chen: Warmaster
Chromie: Fel Queen, Dreamie Genie
Diablo: Cave Dweller Lurkablo (ugly)
Doctor Morales (don't have her): Mega Love Doctor
Gazlowe: Clown Big Top, Grease
Genji (don't have him): Master Dragon
Greymane: Ringmaster
Gul'Dan: Balespider
Kerrigan: Azure Cheerledear
Leoric (don't have him): God-King
Li-Ming: Star Princess
Medivh (don't have him): Knight Owl
Murky (don't have him): Spring Bunny, Fire Batty Murky, Landwalker
Raynor: Dominion Marshal (looks cool, got it twice, second got converted)
Rehgar (don't have him): Ironclaw
Rexxar (don't have him): Frostlord
Sgt. Hammer: Sgt. Doomhammer
Sonja (don't have her): Valorous, Viridian Super Sonja (ugly)
Stitches: King
Sylvanas: Ranger-General
Valla: Ordermaster
Zarya: High Gravity
Amber Tauren
Teal Night Elf
Wizard
Ringmaster's Pride
Amani War Bear
Armored War Steed
Tan Horse
Star Chariot
Sonja announcer
1-day stimpack
Some portraits, some sprays (cute ones), lots of voice lines and some emojis
Veteran Chest (2):
Shadow Mystic Kingdom Arthas (legendary), Toxic Prime Evil Diablo (legendary), Prisoner Tychus, Sinlord Azmodan
Saddled Battle Beast mount
Well, I'm happy with what I received for doing nothing but playing the game from time to time over the past two years. Surprising how many skins there were in these loot packs, also surprised how often I had 2 epic items inside an epic chest. Overall, it's lovely.
Edit #1: post looks ugly. Needs cleanup and better formatting.
Edit #2: post too long, still sucks.