Now I have a better understanding of what is happening! It looks like you have an older version of the AnKing deck installed.
All the cards from the v12 version (the up to date one) downloaded via AnkiHub are located under the tags I mentioned. Therefore, any cards not found under those tags, such as the majority of tags below the AnkiHub_Subdeck tag, can be safely deleted.
I recommend creating a new deck specifically for the v12 cards. After moving them, you can safely delete the remaining old decks. Please follow this tutorial to learn how: How to move cards from your old V11 deck to a new deck
The AnKing Step Deck v12 on AnkiHub does not use subdecks by default; it relies entirely on the tag system. Once you follow the tutorial, move the v12 cards to a new deck, and delete the others, you will only see the tag system. There will be no subdecks on your main Anki screen.
If you are new to Anki, I recommend following this tutorial to configure your deck settings correctly and learn how to use the tag system to find and unsuspend the specific cards you want to study: How to Get Started Studying