I will start with an advanced topic in Shaivism. 'El Shaddai' in Judaism is considered equivalent, but I will not get into that yet.

HPB in SD mentions 7 Shaktis, i.e. goddesses, energies, or forces, and she or another Theosophist says the Dhyan-Chohans are 'at the head of forces.'

the 7 Shaktis:

Devi Prakriti
Mantrika Shakti
Jnana "
Para "
Ichcha "
Kriya "
Kundalini "

Despite that these are supposed to be impersonal, there is a head of each force. There may be a feminine and masculine self of the head of each force. Then what are the '7 Shivas' so for example the first and Devi Prakriti are Shakta as Fohat? (though Fohat is also masculine. I suppose he has a feminine self, but Fohat is a slightly different topic.)

Would the '7 Shivas' be part of the Astamurti of Shiva, which has 8 Shivas, one or two of which are impersonal, or do you think they are other versions of Shiva? I suspect it at least uses the Astamurti, because it has Mahan (Mahadeva,) which is similar to Devi Prakriti, but the article I read about the Astamurti says Rohini is the Shakti corresponding to Mahadeva.

I was just associating Devi Prakriti with Kundalini-Shabdhabrahm and so then Mulaprakriti... but I think Kundalini-Mulaprakriti also exists... I am unsure. Some of this may be wrong in some Shaivism.

Actually, Devi (as the feminine self with Shiva) as Kali is quite like Devi Prakriti.

It is an interesting internal spiritual physics topic.