Pattern 1: practice-area-first navigation
The single highest-leverage navigation choice on a law-firm website is to lead with practice areas, not with About. A prospective client landing on the homepage is searching for evidence that this firm handles their specific situation — a slip-and-fall case, a divorce, a criminal charge, an immigration application. Practice-area links above the fold deliver that evidence immediately.
By contrast, About-first navigation forces the prospect to mentally translate "this is a firm with a long history" into "this is the right firm for my case". That translation rarely happens; the prospect bounces.