(internal citation omitted); Jardaneh v. Garland, 2021 WL 4169600, *6 (D. Md. 2021) (noting that “the 1993 Advisory Committee notes” to Rule 26 “explain that in ‘rare circumstances some of the pertinent information affecting applicability of the claim, such as the identity of the client, may itself be privileged; the rule provides that such information need not be disclosed'”) (citation omitted).