I think the closest thing we get to lizard people is in deconstructing the symbol of the dragon. It's a very old symbol and as such, it has acquired a lot of extra meanings. The key one here is the relationship to Christianity: hostile. Dragons were a symbol of the knowledge of the old European pagans. When you hear the story of St. George slaying the dragon, he's conquering pagans and converting them to Christianity. Same with the story of St. Patrick and the Irish "snakes." As many know, Ireland has never had actual snakes and the story is purely symbolic.

However, we do know that when major cultural movements come along, a lot of times, the old school folks go into hiding. They live a lie because it's not safe to tell the truth. Scotsmen upheld their old ways for a very long time under English rule, for example. The Jewish "conversos" in Spain and Portugal went into hiding after their forced conversions during the Inquisition. They later became famous pirates, slave traders, or new world merchants. Sabbatean Jews in the Ottoman empire were forced to convert to Islam or die, so they did, but kept their old traditions leading to creeps like the Rothschilds doing filthy and disgusting things to kids. You get the point. Here, we're talking about followers of an old religion in Europe. You might think this is some sort of Celtic or Germanic paganism. I think it's older than that, with ties to Phoenicia and Ba'al if we were to dig far enough, but which was preserved by ruling families quietly. So, when we talk about "lizard people," I think we're talking metaphorically about very old families that have kept some of these old traditions, including things like child sacrifice, and the use of sex as a source of empowerment, alive through the millennia.

The idea of actual aliens or lizards or some bullshit like that is pure 1950s sci-fi meant to create a strawman and dismiss it as "conspiracy theory" just like what was done with the "aliens" at Roswell, which were really illegal foreign nationals (Nazi scientists, engineers, and other intelligentsia) that we smuggled into the country in the post-WW2 era under Operation Paperclip. Because it would've been political suicide to admit it openly, and really stupid to let the Soviets capture these people, we grabbed them, brought them here, gave them cover, and used them. The little green Martians crap was pure fabrication to make anyone actually telling the truth sound like a crackpot.