In one of my discords, someone suggested searching systems by the following;
Government - Corporate
Economy - Industrial
Faction State - None
At the 3 I've been too so far, all have spawned at least a G2 suit.
At Rishaktwai, Mouchez Gateway I found a G3 Manticore Executioner and G2 suit;
View attachment 228565
At Mouchez, there was 1 suit and 8 weapons. I purchased the gun, then moved to Rishaktwali - Whelan Station, which matched the station type as well, when I arrived it took a whole to load in, then seemed to have the same sales, minus the gun above, as Mouchez. Bug, intentional? Not sure, will report more findings soon!