If the first 4 had been found in New England, they would be typical quartz points of what is generically termed the "small stem tradition". Up here, that tradition includes styles like Lamoka, Wading River, and Squibnocket Stemmed, and especially for the latter two styles, most often made of quartz. And then the last piece looks like a scraper.
But, I don't know if these are from Md. or Ky. And, I am not familiar enough with those two geographic areas to know what type names might apply there. So all I can really say is the first 4 resemble "small stem" points, that are likely the most common type we find up here. They appear here in the Late Archaic, but some extend well into Woodland times, making a tight time period hard to judge when surface found.