I think this is a very difficult question. What other information do you have? Are they all siblings? Is there yellow on their bellies? Are you aware of a locality?
While you can narrow the subspecies down eg not S. s. alfredschmidti etc I think further identification will be almost impossible. Whilst the individual in photo 1 looks like S. s. s. those in the other photos look S. s. t. But then you could even start considering beschkovi, werneri and then again can you be certain they are pure breeding?
Despite all this, they look healthy and attractive and if you are interested in having them, you need to decide why do you want them. If you want to have a collection of named ssp then my advice would be to leave them.