Jehovah's Witnesses: Is it true that JW's come as close as any group to being most like the ancient Christians?

It's one thing to say it, another thing to be it. The primitive Christians lacked a hierarchy or a solidified Church structure. They also weren't unified in their doctrines. Can you say any of that about the JWs? I think nondenominational Christians have a much better claim to being "like the early Christians" than the JWs.