True fans have to check those films themselves!
I know it can get costly and time consuming, but that`s the only way to get reliable info. Last year I for instance ordered Hustlers Italian Bitch twice (US and European edition), than two licence editions of the seemingly Italian original until finally I found Melissa Blacks dap in a German license copy. It all cost me about 100$! But I think it was worth it - also for the sake of completing Melissa Blacks list of anal works.
Also beware of reviews and screenshots floating online. These are most time much better resources than dvd covers, but many reviewers dont watch the scenes from start to end without <FF>-ing, many dont pay attention to fetishes they are less interested in. Screenshots on the other hand are too often made automatically and my thus miss the important moments.
Here at DAPlist I am glad to have a number of very reliable dap fans doing a really good job!

The longer the list exists, the better the expert team gets, I can tell you dpplist.