You should check out what Alden Thompson wrote
on Spectrum Magazine's Sabbath School Commentary. He discusses the identity of the little horn. While I tend to be agree with those who say that the little horn represents Antiochus Epiphines, he has some good points. For example one of the reasons why it can be hard to identify which symbol represents which bad guy, is that they truely do all look the same. Here is a key quote where he extends the metaphor Opus style
But that’s also why the story turns scary here, for we can be so eager to pin the right label on horns and beasts that we forget to look in the mirror and recognize ourselves as potentially close relatives of the beast.