I joined all those except Iglesia in Cristo, but I've not written about the Christian Science meeting or the Pentecostal ones.
The Christian Science meeting (Wednesday night) was just a set reading followed by a few experiences. Only 6 people including myself were present. One my took my email and sent me a few video testimonies of healings.
The Pentecostal meeting was distinguished by very loud and cheerful singing with hands in the air. The owners of the church also seem like money grabbers to me, and I was quite clearly made to feel unwelcome.
Other groups: Quakers, Unitarians, New Apostolic Church, Methodist, Catholic, Church of Scotland, Baptist, Church of God/Grace Communion International.
The New Apostolic Church makes a particularly interesting comparison with JWs.