???
I agree that the “thousands” figure reflects a poor understanding of Protestantism (there probably are thousands of independent ecclesiastical organizations of one sort or another, but they certainly aren’t all rival churches in the sense Catholics suppose), but eight? What are these eight? I can name the following groupings with significant differences between them without trying very hard:
- The Anglican Communion, plus mainline Lutheranism (ELCA in the U.S.) and some of the more liberal “Old Catholics”
- ACNA and its “GAFCON” allies, separated from the former by their refusal to tolerate the liberal wing of Anglicanism, especially with regards to homosexuality–this is admittedly a developing schism worldwide, but I don’t think anyone disputes at this point that we’re headed for at least two worldwide Anglican bodies where one Communion used to exist
- Continuing Anglicans, separated from the previous two groups by their refusal to accept women’s ordination
- Confessional Lutherans (I’m being generous and not counting the emerging Lutheran equivalent to ACNA, because it’s possible that they’ll wind up aligning themselves with the ACNA ), who reject the “liberalism” of mainline Lutheranism and refuse to be in full communion with anyone who doesn’t share Lutheran distinctives such as sola fide and the Real Presence
- Mainline Reformed–in the U.S. this would include PCUSA, RCA, and UCC
- Moderately conservative Reformed who accept women’s ordination (EPC and to some extent CRC in the U.S.)
- Confessional Reformed (OPC and PCA in the U.S. are two of the major groups)
- Dutch Reformed who don’t accept the CRC’s teaching regarding common grace
- Fundamentalist Presbyterians (Bible Presbyterians in the U.S.)
- United Methodists and similar mainline Pietist groups
- Mainstream evangelical Pietists who don’t have a lot of litmus tests beyond evangelical basics
- Holiness denominations that retain distinctive Wesleyan doctrine but do not hold to strict lifestyle positions, such as the Church of the Nazarene, the Wesleyans, the Free Methodists, etc. The Nazarenes tend to hold themselves aloof from the others, but this is not largely for strictly doctrinal reasons so I’ll lump them all together. I’ll concede that the more "Keswick’ oriented groups like the Alliance can go under 11.
- “Conservative Holiness” groups that hold to dress codes, etc. These are themselves splintered into many different groups–I’ve known denominations divide over whether the wedding ring is worldly.
- Holiness Pentecostals who believe in “three works of grace”
- Non-Holiness Pentecostals
- Oneness Pentecostals (maybe you don’t want to count them since they are non-Trinitarian)
- “Word of Faith” and other triumphalist Pentecostals whose ideas are not shared by mainstream Pentecostals
- Mainstream Mennonites/Brethren
- Conservative Mennonites/Brethren
- Evangelical Mennonites/Brethren
- Amish
- “Conservative” Quakers
- Southern Baptists
- Mainline Baptists and similar groups (I’ll count the Disciples of Christ here)
- Fundamentalist Baptists and non-denominational fundamentalists
- Reformed Baptists
- Primitive Baptists (both fundamentalist and Calvinist)
- “Christian Churches and Churches of Christ” (instrumental)
- “Churches of Christ” (non-instrumental)
- Plymouth Brethren (Closed; the Open Brethren fit with other conservative evangelicals/fundamentalists quite well)
One could certainly make much finer distinctions, but these are thirty quite distinct groups operating in North America (and internationally–my point is that there may be other groups that don’t have a significant presence here). If you want me to explain the doctrinal distinctives that make each of these groups unique, I’m happy to do so. You can certainly find many folks in most of these groups who claim that their distinctives aren’t that important–but you can find many others who say that they are.
The list is somewhat biased by my personal experience–note that I have the most explanations and caveats for Anglicanism and the Holiness groups, because the latter is my heritage and the former my present affiliation. At the same time, I’ve resisted the temptation to proliferate distinctions within these two traditions.
Edwin