I've read books on the LDS/denial over the years, and have been in a position to know more than the official statements. My grandfather, as a mission president in South Africa carried on some correspondence with 50E South Temple. A lot of folks don't give credit to the LDS for their anti-slavery doctrine which required southern slaveholders to free their slaves as a condition of their baptism. The fact is Joseph Smith had dear friends who took refuge in his home, and carried no personal prejudice. He took the position, while running for President, that the government should purchase all the slaves and set them at liberty. A large number of blacks, as free men, joined the church when their former masters set them free while seeking baptism. Some of these were in the first Mormon wagons to enter Salt Lake Valley.
The LDS have always held that blacks are the children of the same Father in Heaven, and would on conditions of personal faithfulness gain all the blessings anyone else can obtain in the final judgment. The Jews/Israelites believed they were a chosen race as heir of Abraham. They believed only the tribe of Levi was entitled to hold the "Levitical Priesthood", and that other roles were reserved for some on the basis of promises to their "fathers". The LDS have always believed in doing ordinance work for all people on the understanding that these endowments/ordinances would be valid if anyone ever chooses to accept them in subsequent worlds.
Jesus himself told a parable about the Master who hired some workers in the early morning, agreeing to pay them a penny for their labors for the day. Then the Master hired others at noon, for the same pay. And again hired others at the last hour, agreeing as well to pay them the same pay. The folks who had the job all day long, bearing the burdens in the heat of the day, started complaining about being unequally treated. But the Master rebuked them, and said it was his own business and he had lived up to his promise with them.
I think it is an error to look at "priesthood" as a personal right. If it has any meaning it comes from God, and is a charge to serve God, and not to be a honcho or someone "superior". That people don't understand that very well is just because we are not very good somehow, sometimes.