Did Jesus spoke also of Ellen Gould White? Yes, see
​Revelation 3:18 (Astonishing all three in one verse!)

    "I counsel thee to buy of me gold tried in the fire, that thou mayest be rich; and white raiment, that thou mayest be clothed, and that the shame of thy nakedness do not appear; and anoint thine eyes with eyesalve, that thou mayest see."  Revelation 3:18
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ellen = light, lamp/torch/bright, word of God (Luke 11:34a, Psalms 119:105, 130)
gould = variant spelling of "gold", crowns of gold (Revelation 4:4) 
white = color of Jesus' raiment/clothing/righteousness

​​     "The light of the body is the eye ..." Luke 11:34a.  "Thy word is a lamp unto my feet, and a light unto my path." Psalm 119:105.  "The entrance of thy words giveth light; it giveth understanding unto the simple." ​Psalm 119:130.

    "And round about the throne were four and twenty seats: and upon the seats I saw four and twenty elders sitting, clothed in white raiment; and they had on their heads crowns of gold." Revelation 4:4.  Is Ellen Gould White one of the 24 elders?  I do not know,​ but God knows :)

    "And his raiment became shining, exceeding white as snow; so as no fuller on earth can white them." Mark 9:3. "And his clothing became shining, very white, as no cleaner on earth would make it."  Mark 9:3, BBE (Bible in Basic English)