Hey man, good news; found some on my backups!
Oblongs:
These ratings are from a 2008 airing.
01. TV-14-L (Misfit Love)
02. TV-PG-DV (Narcoleptic Scottie)
03. TV-14 (Milo Interrupted)
04. TV-14-L (Bucketheads)
05. TV-14-D (Heroine Addict)
06. TV-14 (The Golden Child)
07. TV-14 (Flush, Flush, Sweet Helga)
08. TV-PG-DLV (Disfigured Debbie)
09. TV-14-D (Pickles' Little Amazons)
10. TV-14-DL (Get Off My Back)
11. TV-14-D (Please Be Genital)
12. TV-14-D (My Name is Robbie)
13. TV-14-L (Father of the Bribe)
Mission Hill:
These are from a 2002 airing, from back when [as] had the other logo.
01. TV-14-DL (Pilot)
02. TV-14 (Andy Joins the PTA)
03. TV-14-D (Kevin's Problem)
04. TV-14-D (Andy vs. the Real World)
05. TV-14-D (Andy and Kevin Make a Friend)
06. TV-14-DL (Andy Gets a Promotion)
07. TV-14-DL (Kevin vs. the SAT)
08. TV-14-DL (Unemployment Part 1)
09. TV-14 (Unemployment Part 2)
10. TV-14-D (Kevin Finds Love)
11. TV-14 (Stories of Hope and Forgiveness)
12. TV-14-L (Happy Birthday, Kevin)
13. TV-14-D (Plan 9 from Mission Hill)
Super Milk-Chan
These are from a 2006 airing.
01. TV-14 (The Evil Spirits Go Marching In)
02. TV-14 (From Giba-Chan to Dioxin)
03. TV-14 (Don't Give Up Sumi High Baseball Team)
04. TV-14-L (The Return of the Young Master from the Planet)
05. TV-14 (Rice Cakes Stretching and Shrinking)
06. TV-14-D (The Towering Homeless)
07. TV-14-D (Ra-Ra-Raccoon Dog, Heisei Pig Wars Oink Oink)
08. TV-14-DL (The Virtual Sound System)
09. TV-14-D (Financial Decay Peninsula)
10. TV-14 (Hou Hokekyo, Who's Going to Die)
11. TV-14-D (Having a Thick Talk for Dinner)
12. TV-14 (Farewell to Mankind)
13. TV-PG-D (Vintage Collage 1)
14. TV-PG-D (Vintage Collage 2)
15. TV-PG-DV (Vintage Collage 3)
Have you been able to find anything for Case Closed? Sadly I don't have recordings
