Crowell previously led Miami (Ohio) to 208 wins over her eight seasons with the team.
Holland is the eighth newcomer to join the Nittany Lions this season.
McDaniel averated nearly 20 points per game for the Lady Lions in 2019.
The Nittany Lions' black shoes and basic blues could look different starting this fall.
The update brings the university's total to eight positive cases since testing began earlier this summer.
Penn State added two international players to its roster this week.