There are multiple languages released for each set. And that is for every set and release of any Pokemon set. For the Jungle checklist, it was also released in Dutch, French, German, Italian, Brazilian Portuguese, Russian and Spanish. Because of a controversial decision by the membership, none of these checklists can be uploaded in English, they can only be uploaded in their native languages. For any of these languages, a checklist is near impossible. Although we know what they are, we don't know what they are called in those areas. There is a ton of work to be done and I am willing to do it, but all work is stalled as a result of this. I certainly do not have to agree with it, but I have to respect it. It was what was decided, therefore, my hands are tied.
For now, I would suggest to research for this specific German version. Once all of the cards are identified, then pass that info along. That information can be uploaded quite quickly.
I am one of the members that helps within the site. I work closely with the IRs and can answer most questions. Please send me a message if there is anything I can assist with. If I don't know, I can certainly try to figure it out or direct you to a resource.