Well, hopefully my half-baked reply is better than no reply

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I'm no Rameau expert, the only thing I've played is the lone 2-3min La Dauphine, but I'm somewhat familiar with his works. For me, the 1724 suite in e minor from 'Pieces de Clavessin' stands out, and the concluding rondo section of La Villageoise is particularly engaging.
Now, as far as larger solo pieces by him, he only published 3 books that survive with one and two harpsichord suites within them. So, the above metioned is like 1 of 5 of those suites. So sampling that and the other four shouldn't take too much time.
Good Morning