oh for sure some have similar or even less than us. I was talking more about on the average side of things, we are a bit less genetically diverse than most. But especially among endangered species id expect diversity to be likely to be lower than ours. Not all that long ago they discovered a family of stick insect that everyone thought was extinct, living in a bush on a remote island. Since only a single family of them were found, its unlikely they are as diverse as we are.