This is how I would describe the church we attend:
“It is a Christian Restorationist Church, heavily influenced by the LDS Restorationist Movement, but not rooted in the LDS Church created by Joseph Smith”
What I mean by "not rooted in the LDS Church" is that it does not depend on ecclesiastical succession of authority stemming from Joseph Smith in any way. Our church has adopted many LDS-centric principles, and because of that may appear to some people as having some kind of dependency on the LDS church, but it does not.