Select posts from list and add them in a new list

You can use a custom taxonomy for the filters in the list box (C, PG, SG, PF, SF).

If you want to make sure they are “filtered without reloading the website” you need to load all the players and the filters and manipulate them client side with JS. I usually add the taxonomy names to data-attributes and use the jQuery Attribute contains selector for this.

-Deepti Boddapati