Over the years I have had 39 people people tested. Typically, the
matches run into the thousands if not tens of thousand. I have one
person whose test results found less than 100 matches. This was the Y
chromosome test.

There will always be fewer matches on Y-dna testing than on
autosomal testing because you will only match on Y testing if you and
the match are males (that eliminates half the population), and you are
descended in an unbroken male line >from a common male ancestor. That
eliminates many more people.
Bert
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Herbert Lazerow
San Diego