Many splinter groups are still active.
They are not LDS; they are dispersed, and they are small. By comparison, the LDS are about 16M.
https://en.wikipedia.org/wiki/Fundamentalist_Church_of_Jesus_Christ_of_Latter-Day_Saints
"The exact number of members of the FLDS Church is unknown due to the relatively closed
cultish nature of the organization.
[12][13] However, the FLDS Church is estimated to have 6,000 to 10,000 members residing in the
sister cities of
Hildale, Utah, and
Colorado City, Arizona;
Eldorado, Texas;
Westcliffe, Colorado;
[14] Mancos, Colorado;
Creston and
Bountiful, British Columbia; and
Pringle, South Dakota.
[15] There are also developing communities near
Benjamín Hill, Sonora (south of Nogales in the state of Sonora);
[16] Ensenada, Baja California (south of Tijuana);
[17] and
Boise City, Oklahoma.
[18] Members of the FLDS Church have owned machine shops that have sold airplane components to the United States government, and from 1998 to 2007, the receipts of these components totaled more than $1.7 million.
[19]"
"In 1984, a schism formed within the FLDS Church just before the death of Leroy S. Johnson. A small group of FLDS (known as the
Centennial Park group) took issue with the "one-man rule" doctrine that altered the leadership structure of the church and that was implemented fully when Rulon Jeffs assumed his position as sole leader of the organization. These followers took up residence just south of Colorado City, in
Centennial Park, Arizona, calling themselves "The Work of Jesus Christ," or "The Work" for short.
[15]
Also in 2002, after Warren Jeffs assumed leadership,
Winston Blackmore, who had been serving in Canada as the Bishop of Bountiful for the FLDS Church, was excommunicated by Jeffs in an apparent power struggle. This led to a split within the community in
Bountiful, British Columbia, with an estimated 700 FLDS members leaving the church to follow Blackmore.
[27]"