Any idea what my curl pattern is?

I'm getting my hair professionally trimmed next week and I'm afraid I'm gonna have to chop off a lot. Idk if it'll happen but it's what I'm worried about. And it's taken years to get my hair just to my chin. I've had damage from my mom chemically straightening it my whole childhood so I've had to a big chop (I mean like buzzcut) twice. So I'm kind of scarred lol

I feel like it's three different curl patterns all around but the big clumps toward the bottom is the majority of what they look like. I just didn't have a whole lot of time to style it after I showered this morning so they're all over the place. want to buy extensions in the event my hair is cut super short and I want them to match as close as possible