From my experience, Podcast filenames and ID3 tags are created with all possible variations. Many times these filenames and tags are not readily digestible by the Clip Sport (and Clip Jam). I try to edit the ID3 tags of my downloaded Podcasts using the software mp3tag to make these files more user-friendly for my Clip Sport. I use tag format ID3v2.3 ISO 8859-1
My best advice is to move each family of Podcast files into a specific subfolder under Podcasts. Then you could try designing a Podcast family name (album field) with the specific identity within the first 16 characters. Then make sure each episode (title field) has a related and specific identity within the first 16 characters. Then you could try using 2-digit track numbers (01-99) for each specific family of Podcast files.
Each Podcast collection may require a bit of trial and error. I think the results are usually rewarding (?)
I also agree this extra effort is usually not required for downloading and playing podcasts on IOS devices.