There’s a reason I used the photo of Craig Kimbrel with his family at the top of this post rather than one of him in his unusual pitching stance.
According to this article by Sahadev Sharma in The Athletic, family is one of the most important reasons Kimbrel chose the Cubs, citing team special assistant David Ross, who caught Kimbrel for three years in Atlanta:
“(Ross) did fill me in on the culture of this ballclub,” Kimbrel said. “(It’s the) Chicago Cubs. He didn’t have to tell me all that much of the culture of this place and what’s expected here.