polytheist or monotheist. I think some people are using these labels as if they are derogatory.
It is true that LDS doctrine says there are many gods. So if you are considering the entire universe then yes you could in a very small instance say LDS doctrine is polytheist.
But, if you are talking about our sphere of influence, our earth, there is only one God. God is a title like Bishop. There is only one Bishop for you. There is only one God for you.
In the overall sense of how LDS members worship, they are monotheists.
Ask any LDS member.
I don't mind being called polytheist, or zen, or tao or catholic or LDS or whatever. If you say my belief is somewhat zen, and I am not zen, I will not be upset with that or even argue with you.
I like to say I am every religion and I am none. Every religion has a portion of the truth.