Yes, we can get Parasara Bhattar's 171 Namavalis extracted from Vishnu sahasranamam. The file whose link is provided at the end of the answer has the following preface
One great Vaishnava devotee of yore named Parasara Bhatta while writing
the commentary has selected approx. 171 names out ofthousand names in
Vishnu Sahasranama and has described the ...