What criteria do FAA VFR Charts use for High-Intensity Obstruction lights? FAA’s website provides some symbology explanation (specifically, I’m looking at VFR Charts) and also a database of obstacles, the Digital Obstacle File (DOF). Their PDF provides an explanation of the lighted codes; options of R, D, H, M, S, F, C, W, L, N, U.

I assume that VFR Charts are created with the same data as the DOF. What are the lighting codes in the DOF that correspond to the “High Intensity Obstruction Lights” on VFR Charts?
The DOF_README.PDF includes the following field description:


  Type of Lighting   
  
  "R": Red
  "D": Medium intensity White Strobe &amp; Red
  "H": High Intensity White Strobe &amp; Red
  "M”: Medium Intensity White Strobe
  "S" : High Intensity White Strobe
  "F" : Flood
  "C" : Dual Medium Catenary
  "W": Synchronized Red Lighting
  "L" : Lighted (Type Unknown)
  "N": None
  "U": Unknown


Since the charting would only use the "High Intensity" label if it was known, it would map to types H and S.   

It's also useful to note that the Aeronautical Chart User's Guide adds the following note:  


  High-intensity lights may operate parttime or by proximity activation.