Had there been any Shi'a of Ahlulbayt in the Umayyad family?

Many scholars believe that there were no Shia in the Umayyad family at the time of the Imams. Some believe that Mu’awiyah son of Yazid rejected the corruption of his father and grandfather, and showed love for the Ahlulbayt (a). Assuming that is correct, then the la’an on Bani Umayya does not include him, since he rejected the “Umayya” ideology.