You laid out most of the denominations quite accurately as I know it . I have searched for a New Testament church in practice, very rare in North America, but could be more common in poorer countries. I don’t know I have little contact with them since Years ago I corresponded with a person in the Philippines, it sounded very much like an Acts ch 2 church . But I never visited it . I did check out the SDA some and they have some good Background, but false prophecies they had a few , and they also adhere to women and that was the root problem I found . I spoke with a few of them and found them lacking in understanding on some issues. Mostly the woman issue they had a leader woman, I can’t remember her name but she lead them astray in my opinion, otherwise they where pretty good but that was well over 100 yrs ago . Today I don’t think they have recovered from yrs ago . They are right about the Sabbath . but seems 1800 years has buried the truth on many issues. Unless you are a RCC , I won’t go there .