I'm not going to be much help in the exact identification of these, since I
don't know their history, and I'm certainly no expert on Spurias. However,
they do look like they could be representatives of wild species to me.
My understanding of I. halophila and I. orientalis may not even be good
enough to tell them apart reliably, but I know both are commonly cultivated, and
both tend to come true from seed. I believe there are named cultivars of
both as well (definitely of I. orientalis).
The main reason I sent this note is to point out that in any wild species
there is going to be individual variation, so it is quite possible that a
specimen of perfectly good muselmanica might be of quite a different hue than
another. The blue-flowering plant resembles muselmanica to my eyes, but
I'm not expert at recognizing it either.
I like Spuria types, and hope to get better at recognizing the various
species, and hopefully somebody else more versed in these plants can take it