I don't think there is any coin that is way more unique than Bitcoin is. Yes, it may lack features that some altcoins have and cannot be edited or worked on but that is in fact it's the best feature. Imagine what would have happened if Bitcoin was something that could easily be changed or edited by young a few keys on the keyboard, there would have been no foundation for this industry in fact. That's why no one can control it. Satoshi already thought of lots of probabilities before bringing this out to the public. Basically, what I'm trying to say is Bitcoin is the most unique coin.
More than a decade back when Bitcoin was introduced to the worl it is unique to everyone. In today's time it is still unique in its own ways but there are other altcoins that have thier unique identity. Let's take an example of Dogecoin, it was the first meme coin which makes it unique as when it was launched it was different from others at that time. Now we have so many meme coins.