First, I can't imagine why Apple with their reputation for excellence designed such a poor native Photos app with cutesy organization by faces, etc. vs. a professional application that simply arranges photos in the order they are on the PC such as 001.jpg, 002.jpg, 003.jpg, etc. or at least makes that an option.
I have tried all the sorting apps I can find. Some make a good try, but are cumbersome.
For my money, until Apple updates and improves their native iPad Photo app, the best bet is to use You Look Better Here. Photo Sharing & Video Hosting by SmugMug. and the SmugMug app on the iPad for displaying and viewing your photos if you want them to appear in the sequence that YOU want vs. the scrambled sequence that Apple gives you.