I love this quiz! But "anabaptistic" isn't really a useful word. Anabaptist is fine. I'd perhaps argue that Rastafarianism and Scientology have diverged enough from their undeniably Christian roots to no longer count as denominations within Christianity, but that's small potatoes in the face of such a great quiz!
Yeah, I really don't think Scientology should be on here. It may have some influence from Christianity in that Jesus is considered a "teacher," but in most other aspects it diverges wildly from Christianity, not even sharing Christianity's Abrahamic roots. If anything, Islam and Judaism are more similar to Christianity than Scientology.
Other suggestions:
1. "Evangelicalism" is fine as an answer, but it isn't technically a denomination, but rather a cross-denominational ideology. Technically speaking, I think Tim Tebow is a Southern Baptist so you should accept that.
2. Can you please accept "Seventh Day" (or "7th Day") for Seventh-Day Adventists?
Scientology is in no way a Christian denomination and it should not be included in this quiz. It is a completely separate religion and is not historically, theologically, philosophically, or culturally related to any legitimate Christian denomination in any way. If you wish to keep it at 20 denominations perhaps you could include Episcopalians or the Moravian Church instead.
Other suggestions:
1. "Evangelicalism" is fine as an answer, but it isn't technically a denomination, but rather a cross-denominational ideology. Technically speaking, I think Tim Tebow is a Southern Baptist so you should accept that.
2. Can you please accept "Seventh Day" (or "7th Day") for Seventh-Day Adventists?