I believe that they are focused on the very topic for which they were created to investigate.
For instance, concerning the Committee's letter to Mr Kurt Olsen:
The Select Committee’s investigation has revealed credible evidence that
you publicly promoted claims that the 2020 presidential election was fraudulent and participated in attempts to disrupt or delay the certification of the results. For example, just days before the January 6th attack on the U.S. Capitol, you contacted various high-level officials at the Department of Justice at the former President’s “direct[ion]” to discuss filing a last-minute challenge to the election based on a similar case that the Supreme Court had already rejected.1 In addition, you reportedly prepared a draft executive order for former President Trump that would have directed the U.S. Department of Justice “to take voter action,” 2 and,
according to materials on file with the Select Committee, you had multiple telephone calls with former President Trump on January 6, 2021.