According to the video, what are the three main rites from which all modern rites trace their lineage?

The Latin Rite, the Antiochian Rite, and the Alexandrian Rite.

Name two of the three particular Churches that the Alexandrian Rite has borne in communion with Rome.

Coptic Catholic Church, Ethiopian Catholic Church, Eritrean Catholic Church

I can describe how different rites express unity and diversity within the Catholic Church.

1
While the Roman Catholic Church is the largest, there are 16 million Catholics who belong to Churches formerly connected with Orthodoxy and are now in full communion with Rome.
2
A rite is a liturgical, theological, spiritual, and disciplinary heritage distinguished according to peoples' culture and historical circumstances.
3
The three main rites from which all modern rites trace their lineage are the Latin Rite from Rome, the Antiochian Rite from Antioch, and the Alexandrian Rite from Alexandria.