There are no statistical anomalies in the count - Republican legislatures in WI, MI, PA, AZ, and GA refused to allow mail-in ballots to be counted until after the in-person tallies were completed in a race in which Democrats voted by mail by a 3:1 margin because Trump spent months dissuading Republicans from doing do.
The anomalies cited in the OP were all predictive indicators, which are by definition imprecise, and will now be updated to reflect this loss when used in the future.