Jimmy Olsen, the GOAT?

I would say Joe Chill had the biggest impact on him

Good point.

I think Alfred. He was a father figure to Bruce after Waynes got killed. He supported his master as well as his sidekicks. Some might dare say that Pennyworth is Batman's Batman in father figure sense.

Jimmy Olsen of course. No competetion there.

Dennis O'neil

Yeah Joe chill has the biggest effect

I'd say Alfred or Dick.

Thomas and Martha had the biggest effect because they died, causing Bruce to become Batman.

Joe Chill probably but Alfred is a close second