The source of the DNA profiles is through FTDNA: and also the Sears DNA project
You can also use Ysearch and Ybase for more Sears Sayre related information.
I have studied the origins of the names Sayre, Sears, Seer, LeSire, Sirre and LeSieur extensively right back to around the year 1,000 AD.......when it begins to appear in various spellings in various geographies.
Sayre in general is the Dutch, Belgian, Flemish word for a type of cloth...........and it was taken up as a surname for anyone in the profession: rich or poor.
Thus one expects multiple DNA lineages.........as it is the equivalent of Smith.
Sayres began to be in great demand in England from around 1100AD onwards and were imported to all parts:......the eastern coast from Colchester up to York..........and over into Bedford regions and up into Ayrshire Scotland
In many of the English speaking towns the pronounciation began to morph into Sears.......
Thus Sears and Sayres by the time of migration to the USA are basically equivalent in meaning:
if not in family lineages....................
The vast majority of Sayres Sears come from port towns.....and are fairly identifiable in their communities.
However their usual Flemish origins were often resented by the Anglo governments: and they were often resettled.
Thus there was much opposition to the English Crown and its policies and religions: and Sayres were eager to start new lives and religions elsewhere.
DNA is really the only way to sort them out as to who is related to whom.........but it is otherwise not unusual to find many unrelated Sayres in a given European town: as its such a generic term of all those working in this profession.
As for who is related to whom in the USA......again: it will be DNA that sorts that quite easily with enough tests.