Chester Bennington, Chadwick Boseman, and Robin Williams.
Usually I'm sad because it's unfortunate when you hear of anyone dying really, but these 3 really hit hard.
Chester Bennington and Robin Williams I grew up with, Chester's song lyrics greatly affected my life and helped me get through a lot of pain in my younger years, while Robin Williams was such a recognizable actor in a lot of movies I would watch as a kid. They were just such huge parts of my life for me.
Chadwick Boseman was a little different, since he was not an actor that I grew up with, more like someone I had just been introduced to and was excited to see more things from.
In addition Kobe Bryant can also indirectly be added to the list. Though I'm not a huge sports fan a lot of my close friends were, including my partner, and when he and his daughter were killed but put a huge chunk of my friends group in tears, which in turn made me upset because all of my friends and spouse were devastated.