I don’t know if OP means as of right now or at graduation. Currently, there are still colleges in my daughter’s email extending their deadlines and if applying for arts & sciences, many of our secondary state system schools are taking applications.
@Sarrip is correct regarding the reasons someone might have trouble navigating the process and not applying realistically or timely. It’s a daunting process for everyone, more so if you have little guidance and knowledgeable support.