Here are some that i found
http://maps.google.com/mapfiles/ms/micons/blue-dot.png
red-dot.png
/orange-dot.png
/yellow-dot.png
/green-dot.png
/pink-dot.png
EDIT:
I doubt what you consider as "new markers" is just another type of icons (notice in the url &name=icons/spotlight). Apart from what you found I could only find one more => spotlight-waypoint-blue.png https://mt.google.com/vt/icon?psize=20&font=fonts/Roboto-Regular.ttf&color=ff330000&name=icons/spotlight/spotlight-waypoint-blue.png&ax=44&ay=48&scale=1&text=%E2%80%A2
Also seems that Google Chart Tools Infographics have been deprecated check here (developers.google.com/chart/infographics/). Since I couldn't find any documentation from google as to what is the future for infographics, if I were you I will stick to the old ones. And if you're paranoid like me and worry that these icons might disappear later, you may want to copy to your own server to be sure.