There are many religions that have very similar teachings in terms of Christology (who is/was Jesus?) and eschatology (how is the whole end of the world thing going to play out?).
The Christadelphians share all of their views on Jesus, the trinity, hell not being hot, and eternity on paradise earth. They even believed all this stuff in 1919, but for some reason Jesus liked the JW's better because they were offering up BETTER spiritual food... like that he returned in 1874. They are pretty legalistic from what I understand, but they are not a cult as far as I know.
The Worldwide Church of God used to believe almost identically as the JW on all these IMPORTANT teachings. Except their "faithful and discreet slave" was Herbert Armstrong. Except he didn't claim to fulfill TFDS "prophecy". He claimed to be the Elijah who would return that was spoken of in Micah. What makes this group SOOOOO fascinating is that after the death of Armstrong the leadership withdrew their claim of divine appointment, and even came into orthodox teachings. There is a video they put out that tells their story "Called to be Free". Randy sells it at freeminds.org. Also be sure to go to www.wcg.org. You can get a free subscription of The Plain Truth. It is pretty much anti-cult, anti-legalism, anti-religion all the time. It is subtitled, "Christianity Without the Religion". It is real fun to watch the look on the face of your dub loved ones when they read some of the article names.
There are several break off groups of the Worldwide Church of God that still adhere to Armstrongs teachings. The funniest is www.thercg.org and there is one that has a tv show (they must be from God, they have a TV SHOW!!! The JW don't have a tv show!!!) www.tomorrowsworld.org
The Iglesia Ni Cristo is a little known but VERY large group out of the Phillipines. Their beliefs on Christology and eschatology are similar to the JW.
There is a real kooky group that uses God's divine name called the Nation of Yahweh. They are headed up by a guy named Yahweh bin Yahweh who claims to be the messiah. He is in prison right now. They have a REALLY funny tv show. Another sacred name group is the House of Yahweh. They are headed up by a guy who claims that he and his brother are the two prophets spoken of in Revelation.
It is kind of funny. The more a group tries to make themselves out to be God's representative, the more they need to play down Jesus. It is also funny that someone could read the Bible and just decide that some verse is prophesying about them. I mean how could you seperate your desire for that to be true from your ability to honestly interpret such a verse. Silly.
CYP