I am glad you brought up this topic. I was recently trying to figure out why I didn't love my Comp stang Reissue neck as much and now I know why.
Shortscales
AVRI Jaguar
43mm C
1973 Fender Bronco
41mm C
1977 Mullet-stang
41mm C
CAR Competition Mustang RI
40mm D
Squier Hello Kitty Pink Mini Strat
39mm
Strat scale
1967 Fender Coronado II
40mm Thin C
Baja Telecaster
42mm Vintage profile
Squier Vista Venus
44mm U
For a shortscale neck, a
C profile with 41mm nut width seems perfect for me. The extra 2 mm on the Jaguar really makes is feel a lot wider to me. The 73 Bronco neck and 1969 Mustang neck on the Mullet-stang are very close, but the
1969 neck wins with a slight more chunkiness and nitro finish. The Bronco neck feels identical in profile to the Jaguar, just 2mm less width.
For a normal strat scale, the Coronado IIs
40mm thin C is butter and the blocks, binding and nitro checked finish make it perfect. I am actually modeling my Jazzmaster project neck after it. While a 40mm nut width seems too small on a shortscale neck, it feels ideal for a strat scale. Since your fingers have more room due to the expanded scale, the nut width being smaller is less of a factor. I do love the vintage profile on my tele neck and 42mm nut width gives lots of room. The Squier Venus neck is a chunky beast. My guess is its a U profile and the binding makes the 44mm nut feel even wider. Only time will tell if I end up liking it.
One last thing I noticed on the Coronado II that was interesting. They shaped the binding to matchup with the nut so it almost looks like one piece.

J Mascis Jazzmaster | AVRI Jaguar |Squier FSR Sparkle Jaguar| Tuxedo-stang | Baja Telecaster|
Squier Paranormal Jazzmaster XII |Gretsch 6137 White Panther|Gretsch 5655TG Centerblock JR|
Gretsch 5210 Jet (p90s)