...try Shermans? Stuarts? Priests, Grants....
I know the British named the M3 medium Grant/Lee based on whether the secondary turret had a 37mm or 30cal, and the Priest was named by the british because the 50cal position reminded them of a pulpit. I'm not sure when we picked up the habit, but I seem to remember that the Sherman and Stuart were also named by the British. The civil war was heavily studied in british military colleges as the last great example of cavalry tactics pre ww2, iirc, and so the officers were well known. Grant was the Commander of the union army at the end of the war, Lee the competent and beloved head of the confederate army throughout the war, Sherman was the union general famous for inventing the concept of total war and for decimating the south in his march to the sea (and for giving trees neckties), and Jeb Stuart was a confederate cavalry general.
We named vehicles after later generals, even though most of the good civil war generals were unclaimed and the British chose mediocre generals to name tanks with (Jackson and Lee being the exceptions.) They never named a tank after Hancock (the Superb) or
Chamberlain!(he's the guy with the blond walrus mustache) Chamberlain is a certifiable badass; he received theological training; went to Bowdoin college and ended up teaching every non-math or science course, took a two year break to join the Union Army, with no training became a lt.-colonel (he could have been a full one but he declined it), rose to the rank or Major-General before the war ended, won the medal of honor for fighting until his regiment had nothing left to shoot and then leading a bayonet charge against superior forces, left the army to become Governor of Maine for 4 terms and then president of Bowdoin college.
On the other hand, Grant, who got a tank named after him, won battles with superior forces even while drunk, which was constantly. Sherman, who also got a tank named for him, pillaged, looted, and burned crops, while fending off smaller armies, in order to weaken the south.
Hancock got no tank named after him. He was also called "The Superb" and personally accepted the surrender of Robert E Lee.