The question doesn’t make much sense. Enlightenment is a religious and therefore cultural concept, and so in order to even approximate an answer, you’d have to first know which enlightenment we’re discussing.
For example, the Wikipedia page for spiritual enlightenment lists several concepts in various Asian traditions that get translated as “enlightenment.” One of these, bodhi, has this said about it: “It literally means "awakening" and "understanding". Someone who is awakened has gained insight into the workings of the mind which keeps us imprisoned in craving, suffering and rebirth, and has also gained insight into the way that leads to nirvana, the liberation of oneself from this imprisonment.”
How would that translate to, say, a Westerner? It’s anybody’s guess, because the concept wasn’t created to fit Western ways of seeing the world, only those of the culture the concept was created in.
It’s a bit like asking what gumbo is. Being from Louisiana, I consider gumbo to be a very specific type of stew. You won’t be able to make it right unless you’re from South Louisiana. Campbells markets a soup it calls Chicken and Sausage Gumbo, to me it’s just a chicken and rice soup, with added sausage and slightly different veggies and seasonings than normal.
Your question is like asking, how many different types of gumbo are there? An overly-specific question for a concept that has nowhere close to decent definition.