It's worth remembering that potential contenders for the prize are submitted, and it's a highly curated process. I'm sure both works that had a major production on stage in the early months of 2020, or a high-profile digital production, will be among the works under consideration. Here are some of the possible candidates I can think of from both categories:
Plays that had a stage premiere in New York between January-March 2020: Paris, How to Load a Musket, The Headlands, Dana H., All the Natalie Portmans, 72 Miles to Go, Endlings, Coal Country, Suicide Forest, The Hot Wing King
Original Digital Works: Any of the Richard Nelson Apple Zoom plays, Circle Jerk, Russian Troll Farm, Animals, Chonburi International Hotel & Butterfly Club, What Is Left Burns, Wally's World, The Line, Mama Got a Cough, In Love and Warcraft, Last Gasp, Outtakes
I'm not up on regional theater premieres that happened pre-pandemic to speak with confidence about what potential contenders might come from there, and the degree to which postponed/canceled world premieres will be eligible is a lingering question mark. But all told, I don't think it will be hard for the committee to come up with finalists.