Sprint attacks will do more knockback on mobs. But it will also knock entities that shouldn't get knockback like boats, minecarts and armor stands. (Not mobs that have 100% knockback resistance like iron golems)
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Can confirm in 20w48a. I've attached a video which showcases this issue.
Can confirm in 21w03a.
Can confirm in 21w06a.

Relates to MC-225190.
Can confirm in 1.17.
Can confirm in 1.17.1.
Can confirm in 1.18.2 and 22w18a.
Can confirm in 1.19.

I can reproduce this issue on Minecraft snapshot 24w12a.

Can confirm in 1.21.4.