In this answer, it is mentioned that (emphasis mine),
Also, in Arabic, all words derive from their root verbs; so you can tell something about the meaning based on the letters used. In the case of "Allah," there is difference of opinion about which root word is the main one.
In any case, one of the stronger opinions is that it comes from the same root as "Al-Elah."
As there is a difference of opinion, that suggests that there are other strong scholarly interpretations as to what the root word for "Allah" could be. I was wondering what these other possible roots are, and what their literal meaning would be.