With so many world records ,divisions etc you can't really say for sure who is the top power-lifter today.
ED COAN would probably be considered the best of all time over all.
Lb for Lb I don't think there is anyone stronger than Richard Hawthorne. I know he's deadlifted 639.4lbs at only 131lb bodyweight.
Ed Coan is by far the best powerlifter ever. Totaled over 2400lbs at 220lbs. At that time he had a higher total than any SHW on the planet. 900lb deadlift at 220lbs. The increase in totals the last 10 years is from lax rules and better supportive equipment not from athletes being stronger. Just about all top powerlifters will tell you Ed Coan. A very humble great lifter that is willing to help anyone. Very clean lifts, deep squats, paused benches, etc.