Unless I am missing something, ‘KKK’ is never incremented inside the while loop, so it will in fact be infinite.
If you are actually using ‘KKK’ as a counter (and therefore incrementing it), this could work:
MyNames{KKK} = s;
That creates a cell array, and while that can create additional steps required to recover its contents later, it could be an effective approach.
A better approach could be readtable. The first variable would be the names, and you could simply ignore the others.
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