How can I find examples of airports with specific approach types?
An ASR approach is an Approach Surveillance Radar style approach. The guys on MZeroA.com flew one in this video at KLAN. They are not "at" any airport nor are there plates for them it is effectively a function of ATC. I have heard them flown at a few "smaller" class D facilities near me for practice. Generally to practice them you need to be somewhere that ATC does not mind clogging the radio up as they take a fair bit of radio work to fly. 

The RNAV (GPS) RW1 into KWWD has only LNAV minimums. (Note: It also has circling minimums which most LNAV airports will have unless terrain or some other issue forbids a circling maneuver). 

As far as I know there are no LPV approaches that take you lower than 200 feet as is regulated by the FAA: 


  Localizer Performance with Vertical Guidance (LPV). An RNAV function
  requiring WAAS, using a final approach segment (FAS) data block, which
  computes, displays and provides both horizontal and approved vertical
  approach navigation to minimums as low as 200 foot ceiling and ½ mile
  visibility.