I remember watching Bowe, Foreman and classic fights and one the things always mentioned was the jab and which fighter had the best jab and how it would be utilised. I don't see someone today with a killer, beautiful and clinical jab like Ali's and Holmes. Watching Holmes jab through a 15 round waqs just beautiful to behold, it was so precise...what about today's fighters? Even in slow paced fights...a consistent and steady output jabs made fights interesting. What happened to them. Maybe it's just me but the flashy gloves make jabs look underwhelming even when used today, weird I see it that way.
All mentioned above have good jabs, but nothing as exceptional as Bowe, Ali, Holmes...nothing compares. Even Foreman who Ali called the Mummy had a beautiful jab.
I say Crawford , ggg not far behind.
I don't remember Crawford's jabs off the top of my head, but I'd say GGG definitely has an amazing jab. He was using it throughout the Jacobs fight and it was pretty impressive