This link used to go to a spreadsheet with all the 4E adventures published in Dungeon Magazine (and possibly some others, IIRC) during that edition's duration. I remember it listed out each adventure by name, start/end level, adventure path, and maybe even a little summary blurb.

However, the spreadsheet behind that link seems to have disappeared into the digital ether, and I can't find a copy of it in my own google drive (implying I never made a copy of it).

Does anyone happen to have a copy of that spreadsheet that they could share, and/or other resources that would let me sort through the many adventures from 4E Dungeon Magazine?

Yes, this link still works for me:

Although David Igoe's provided link is precisely what I was looking for, I am reproducing the content of his link here to prevent the ironic future outcome of linkrot on an answer to a question about linkrot.

This is a simple CSV file with a header line produced from the Google Sheets export function.

Setting,Type/AP,Lvl Min,Max,Title,Issue#,Link
PoL,Scales of War,1,2,Rescue at Rivenroar,156,http://www.wizards.com/dnd/files/dungeon/156/156_sow_rivenroar.pdf
PoL,Scales of War,3,3,Siege of Bordrin's Watch,157,http://www.wizards.com/dnd/files/dungeon/157/157_bordrinswatch.pdf
PoL,Scales of War,4,5,The Shadow Rift of the Umbraforge,158,http://www.wizards.com/dnd/files/dungeon/158/158_umbraforge.pdf
PoL,Side Trek,4,6,Echoes of Thunderspire Labyrinth,156,http://www.wizards.com/dnd/files/dungeon/156/156_ThunderspireSideTrek.pdf
PoL,,3,3,The Tariff of Relkingham,158,http://www.wizards.com/dnd/files/dungeon/158/158_tariff_of_relkingham.pdf
PoL,,4,4,Heathen,155,http://www.wizards.com/dnd/files/dungeon/155/155_Heathen.pdf
PoL,,8,8,Massacre at Fort Dolor,157,http://www.wizards.com/dnd/files/dungeon/157/157_Fort_Dolor.pdf
PoL,,8,8,Sleeper in the Tomb of Dreams,155,http://www.wizards.com/dnd/files/dungeon/155/155_Sleeper.pdf
PoL,,8,8,The Last Breaths of Ashenport,156,http://www.wizards.com/dnd/files/dungeon/156/156_Ashenport.pdf
Pol,,10,10,The Dark Heart of Mithrendain,157,http://www.wizards.com/dnd/files/dungeon/157/157_dark_heart.pdf
PoL,,12,12,The Haunting of Kincep Mansion,156,http://www.wizards.com/dnd/files/dungeon/156/156_Kincep_Mansion.pdf
PoL,,13,13,In the Depths of Avarice,157,http://www.wizards.com/dnd/files/dungeon/157/157_Depths_of_Avarice.pdf
PoL,,15,15,Sea Reavers of the Shrouded Crags,158,http://www.wizards.com/dnd/files/dungeon/158/158_Sea_Reavers.pdf