Peer Recommendations

I know that only Dartmouth accepts/asks for a peer recommendation. However, I see that UChicago, Princeton, Cornell, Harvard and other schools have ‘peer’ as an option under other recommenders. I think they do accept them because there are other schools that don’t have peer listed, meaning these school specifically wrote in peer. Should I submit a peer recommendation to these schools as well?

Davidson requires peer recommendation as well just like Dartmouth.

I’m not applying to Davidson, I’m asking about schools that don’t require peer recs but list peer as a possible other recommender on common app