Color corrected approximately. It's hard to get all eight right, so this is as close as I can get. The Squeteague ought to be slightly more to the blue side (really depends on the pen you use) and the Gemstone Green should be slightly more "green" (think of the color of the "grass" in a kid's Easter Basket, if that means anything to you). If you look at the earlier Green comparison that I uploaded, you may see the Squeteague more accurately. Monitor differences are going to affect what you see in any case. Done on Levenger Circa paper. Scanned with an HP Scanjet 5470c.
These are all of the greens in my current collection.
Noodler's Squeteague (could list this as a blue or teal)
Noodler's Zhivago (Extremely dark green-ish gray, could list as a black)
J. Herbin Vert Olive ("Olive Green" but I never saw an olive that color! Very pale)
Noodler's Green Marine
Private Reserve DC Supershow Green 2006
Noodler's Eternal Hunter Green
Rohrer & Klingner Alt-Goldgrun ("Old Gold Green" - nice effects at the edges)
Levenger Gemstone Green
My favorites (in order of use): Green Marine, Squeteague, Alt-Goldgrun
Least favorites: Vert Olive (too pale), Gemstone Green (too bright)
I name the ink colors in the posts of these side-by-side scans so that people can use the "Search" feature of FPN to find what they are looking for. Sometimes faster than using the index.