It really depends, I use different words/emojis depending on how funny something is. "Lol" or crying laughing emoji is like a soft laugh or to indicate I'm joking. Lmaoooo is my go to, but LMAO in all caps means something was really funny. I key smash or use the skull emoji in extreme cases where I'm actually laughing out loud or something really resonated with me.
Until I thought about it, I didn't really realize how many different ways I laughed in text! That's wild!