Hello mm and welcome to the Parosphromenus Project and this homepage.
Those are wonderful photos, and very good to hear that you have been able to also have offspring with them.
The way I would see it, is that the fish definitely belong to the bintan group, – most likely one of the more commonly imported species in North America, – which is describes as p.spec. ‘blue line’.
I am not an expert on the identification, – but I do think it is along these lines that you should look for identifying your fish.
The sp. blue line is described shortly in our ‘Other forms’ section, – which you can see here https://parosphromenus-project.org/en/blue-line.html