How many levels of enlightenment are there?

I have experienced enlightenment multiple times. I have found many religions have a similar way of describing it, though they can differ about how many experiences occur and if they are sudden or spread apart over long periods of time. I have also heard it referred to as [Kundalini](https://en.wikipedia.org/wiki/Talk:Kundalini) Awakening where it is a process that can take years to go through the 7 stages. According to this article there are [Four stages of enlightenment](https://en.wikipedia.org/wiki/Four_stages_of_enlightenment) > **My question is this, How many levels or layers of enlightenment are there? Does it happen all at once?**