Regarding the five Susannahs:
Pamunkey-2 - "Thomas Pamunkey west" is a mythical person, no Pamunkey connection
Swann- 869 - No parents listed, no evidence she was ever named "Swann"
Swann-964 - This family lived in Surry County, VA. The name of Thomas Swann's first wife is unknown, it was not Betty West. Their daughter Susannah married a man named William Marriott in 1659. William died in 1681 and I found the following about Susannah:
SUSANNAH SWAN(N), born 26 October 1640. She died on 25 November 1660 without issue "Having been married to Major William Marriott eight months and twenty two days - and was buried at Swann's Point". Major William Marriott made a contract of marriage with Susannah Swan on 7 March 1659/60, promising to bequeath to her Â£100 sterling in the event of his death (Surry County Records, Book 1, p. 159).
if that is accurate, she can't be the wife of Cornelius Dabney;
of_the_Pamunkey_Tribe-1 - no evidence of any connection with the Pamunkey
Swann-336 - similar to Swann 964.