Thanks William!
I think I made some headway as far as processing goes. I am giving below two examples, one before and after. Indeed I spent some time trying to use the various sliders on PP and Topaz to try and get somewhere close to pictures which have that 'pop' factor.
Before
After
Could be the second image is overcooked but I realize now processing vigorously does help and something I did not try earlier. My next move would be to process a few portraiture and group photos to see any discernible differences in each. Suggestions welcome.