Anthony A. wrote:

My question is: will the smaller plants eventually bear much fruit?
Are the just lagging behind, and developing more slowly than their
sunny counterparts, or will they stay small and produce smaller yields?

Thanks in advance for any insight.

they will stay smaller, produce later, and yield less. It is probably
not a great situation for tomatoes. Try greens next time, or have
tomatoes on the sunny side and greens on the other.