Links to information Cucurbita pepto L. http://climbers.lsa.umich.edu/?p=262

All threeplant’s images appear to belong to Cucurbitaceae (gourd family). Some plants in this family are: Cucutbita -squash, pumkin, zuchini, etc… Citrulus- (watermelon) Cucumis- cucumber, musk melon, etc…. But until these plants set fruits to help with the their ID, it will be hard to tell which is which. When these bear fruits and you still don’t know, make new post with photos of fuits. For now check out these included links for some of the plants in the family. Best wishes! Link to black-seed squash (Cucurbita ficifolia), click on images to enlarge. https://en.wikipedia.org/wiki/Cucurbita_ficifolia

paulwonia-? No. My plant is a climber.

paulownia flower looks like some sort of curcubit