Structured data
LegalService Schema
Also: LegalService Schema.org, law firm structured data, Attorney schema
The usual pattern is LegalService for the firm and a Person for each lawyer, with jobTitle, the jurisdictions where they are admitted, and worksFor pointing to the firm @id. Practice areas can be declared as Service entries with the firm as provider.
Bar advertising rules shape what a firm may claim, and the markup must reflect only claims the visible page makes. Past results disclaimers and jurisdiction limits belong on the page itself.