New York Lincoln Giants of 1930
With a devastating lineup that featured Chino Smith, John Beckwith, Clint Thomas, Rev Cannady, Fats Jenkins and playing manager John Henry Lloyd, the Lincolns fielded their best team since 1913. Catcher Larry Brown handled a mound corps of Bill Holland, Connie Rector, Luther Farrell and Red Ryan. The Lincolns were the best team in the east until the Homestead Grays picked up Josh Gibson late in the season to help the Grays win the Eastern Championship Play-off. That was the last year for the Lincoln Giants, but eventually the ballclub evolved into the New York Black Yankees.

I would have taken the 1929 Lincoln Giants over the 1930 team, because the Eastern Colored League that they played in folded after 1929. However, after taking a closer look at the two rosters in my reference books I have changed my mind. The 1930 New York Lincoln Giants do look like the better team.
I have my own list of the top thirty teams from the old Black Baseball leagues and I pretty much agree your list.