Yes, there are Christian denominations that believe that man will become equal to God.
The 5th Commandment, to honour one's parents, would leave us still subordinate, even though equal.
Building this family is in fact the entire purpose of God's creation.
Many of these denominations have "Church of God" in their names (though not all denominations with that name share these beliefs).
Here is one example:
Regrettably, the Trinity doctrine has been a major barrier to clear
comprehension of the biblical truth that God is a divine family.
The God family is headed by the Father and presently consists of God
the Father and God the Son, Jesus Christ. Their plan and desire is
fully focused on "bringing many sons [and daughters] to glory"
(Hebrews 2:10). This has been planned from the beginning.
Jesus Christ is "the firstborn from the dead" (Colossians 1:18)—"the
firstborn among many brethren" (Romans 8:29). These passages mean that
many more are going to join the family as divine spirit beings like
the Father and Christ at the first resurrection, when the righteous
are raised to everlasting life (see 1 Corinthians 15:49-54; 1 John
3:1-2; Revelation 20:6).
Those who are truly converted and have received God's Holy Spirit are
already reckoned to be a part of the family (again, see Ephesians
3:14-15). They await the final step at the second coming.
At that time Jesus "will transform our lowly body that it may be
conformed to His glorious body" (Philippians 3:21). Then it can be
said in its fullest sense, "I will be a Father to you, and you shall
be My sons and daughters, says the Lord Almighty" (2 Corinthians
— from 10 Things You Should Know About God | United Church of God
Additional evidence of their belief that man can become God:
God Became Man so Man Can Become God: The Chief Cornerstone | United Church of God
And supporting evidence from early Christianity:
Early Theologians on Becoming Divine | United Church of God