I would not call out StimulusReflex and the rest like that, it all boils down to the language runtime they are built upon. They are good at what they are trying to accomplish in my opinion.
But that doesn't change the fact that they don't reproduce half of what LiveView can do.
They didn't have to call themselves "LiveView for Ruby!"
I meant it more as a PSA: if you've tried any of these other projects, you still owe it to yourself to give LiveView a try!