I can help with many of the Barkers you have listed. My tree goes Diana Barker Bear(my mother)>Ora Franklin Barker(bro. to Clifford Jerry Barker m. Jane Burton& Stanley Barker m. Lucille Barker)>William Mason Barker m. Florence Linnie Debord>Jerry Micheal Barker m. Sarah Johnson(1st) & Rebecca Wilson(2nd)>William Barker m. Minnie Holbrook>Solomon Barker m. Mary Whisman>Hezekiah Barker m. Susannah Sebastian>George Barker, Sr. m. Francis Ann Kerr
My father's tree also has several Barkers running in it. All of them descend from George Barker, Sr.
Give me an email and I'll try to help.