Yes, that appears to be the case. The first one I focused on was Krirald, which has a convenient alignment with Caroline’s Nebula. That made it easy to find, but it looks a lot like a normal star (apart from being green).
Others are more clearly artificial. Going back to Augnais and looking toward Lirsautton (the reverse of what I had been doing with Krirald) shows:
The green diamond is almost straight up from Lirsautton (the last point on the travel line (almost straight up from the space between “pirate” and “factions”). It is easy to miss the green dots until you know they are there - at which point they seem to be everywhere. Presumably this diamond is either Konola or Otanuomi.
Although any two points do define a line, the line I was following initially is defined by Augnais and Lirsautton. The two Triglavian systems conform to that line, not just the one between themselves. The Triglavians have gone to considerable effort to give their region straight edges.
The chevron icons look like the one in the Pator picture in the previous post (the icon appears above the open map, to the right of the subtitle “solar system” - and you can see it’s relationship to the final star of the plotted route, which is Horaka).
Pator also has two of the diamond icons. Here, a planet silhouette makes the diamond particularly visible:
I am waiting in Pator a while on the chance the “chevron” icon is not intended to mark a vertex, but actually moves to the next system after some period of time. The arrows do suggest that direction matters, and which is more information that required just to mark a vertex. If Skarkon is a vertex. It looks like one to me on the star map, but I see charts that make Niarja, Archee, and Kino the vertices.
If CONCORD intended these shapes to act as “heads up display” icons, then they could have displayed more useful information (similar to HUD icons for anomolies etc.). Putting shapes on the starfield without specifying these are not actually objects in the sky is extremely irritating.
Alternatively, I suppose these icons could have been inserted into our systems by the Triglavians for “reasons,” and those “reasons” are not intended to be helpful.