Why are there two Live Photos albums in Photos?

I meant no offence, by asking about the forum, sorry Tom, but I cannot tell from the post, if it has been relocated. We are occasionally having questions relocated to Photos iOS, as soon as an OP mentions an iPhone or an iPad, even if it is a genuin Photos for Mac question.

I can no longer test this on my iPhone, Tom, because I switched back to syncing with iCloud Photo Library, after I received the iPhone X with 256B storage.

But the last sync with iTunes showed the same strange list of albums in "my Albums" as you are seeing. I had set the sync options in iTunes to "Selected Albums" and "Sync only Favorites", and this created many duplicates of the predefined albums in the My Albums section. The syncing created a second "Panoramic" album, a second Favorites album, a second Selfie album. Plus many additional People albums. The result looked like iTunes had synced "All Favorites", not only the Favorites from the selected albums.

Does anyone know what's going on here, and what's supposed to be going on here? These applications make no sense whatsoever.

Since iOS 10 there is no decent documentation any longer, on how iTunes Photo Sync is supposed to work withe IOS 10 an 11. I tried to find out by trial and error, but the results are quite random. My iPad with iOS 9 is still syncing well, when I sync it with iTunes on macOS Sierra, and I do not see duplicate albums.

This document used to include a paragraph on how the synced albums and folders will appear on an iOS device, but the paragraph has been removed: Keep your photos safely stored and up to date on all of your devices - Apple Support

It does no longer say anything at all about the synced album structure.

Are you asking about Photos on a Mac or Photos on an iPhone or iPad? Your profile signature says "MacBook Pro, macOS High Sierra (10.13.2),", but the question says iOS and you posted in the Photo for iOS forum for Photos on an iPhone or iPad or other iOS devices.

On an iPhone or iPad you might create duplicate albums by syncing photos to the device with iTunes on a Mac . Them you might create additional albums in the My Album section.

Are you syncing your devices with iCloud Photo Library or with iTunes?

P.S. I don't understand why in iOS Photos, the Favorites under My Albums only show some of the images.

The iTunes synced photos are not added to the camera roll, but treated differently when we want to edit them. I find it quite convenient, that the favorites in the camera roll appear in a different album from the synced photos in the "from My Mac" albums.

When syncing with iCloud Photo Library I am seeing the same folders and albums as on my Macs. The drawback is, as the iPhone and iPad do not support smart albums, all smart albums will be missing on the iOS devices. I have to create copies as standard albums, when I sync with iCloud Photo Library.