I have been reading a lot of Lovecraft and surrounding mythos recently and I was wondering if the Shoggoth, the unnamed evil creatures in A Shadow Out of Time, and the unnamed creates who live in the innermost region of Earth in The Mound are the same species.
We know that the Shoggoth took some of the Elder Things' technology and symbolism for their own. In The Mountains of Madness, the humans discovering them suffer from a very strong storm during their slaughter and the escape of the Elder Things, and we see that 5 pointed stars and such things are heavily associated with the Elder Things.
In A Shadow Out of Time, we see that the unnamed creatures that live beneath the earth use wind for weapons, and are associated with what is described as a 5 pointed foot print. These creatures are described as having come from space, which would makes sense if they were Shoggoths who were brought to earth by the Elder Things. They are also described as mollusk-like, and only part material. Mollusk-like doesn't mean they are necessarily goo creatures, but it's pretty close, so also being immaterial could cause a goo like effect especially seeing as we know the Shoggoths evolved slightly after being made by the Elder Things.
There is also a connection between the Shoggoth and the previously mentioned creatures that lived beneath the earth in The Mound in that they live beneath the earth and are malevolent goo-based life. This is a bit weaker seeing as we don't know much about these.
To me it seems that these three creatures are probably related. Do you think this is true?