One branch, many families
The sixteenth-century Reformation produced Lutheran, Reformed, and Anglican streams; Anabaptist communities followed another reform path. Baptist, Methodist/Wesleyan, Restorationist, Holiness, Pentecostal, and independent free-church families developed through later histories related to Protestant Christianity.
Themes such as Scripture’s final authority and justification by grace through faith are historically central, but Protestants disagree about baptism, Communion, election, church government, worship, spiritual gifts, and confessional standards.
A family is not one denomination
Lutheranism is broader than either LCMS or ELCA; Presbyterianism is broader than PCA or PC (USA); and Baptist tradition is broader than the Southern Baptist Convention. Comparing a broad family with a specific denomination requires an explicit entity-type warning.