I have always seen that design referred to as a "Batarang" but apparently SouthOrd calls it an "S-Rake" for their own reasons but, Peggy seems as good a name as any for your rake.
In case you are interested Deviant Ollam has a very useful slide deck called "Distinguishing Picks" which shows many common and uncommon tool designs along with names and some commentary on usability at
http://deviating.net/lockpicking/slides.html, he also covers this in the appendix of the Second Edition of his book "Practical Lock Picking".