Put Sub-Classes and Sub-Races for all 5e Compendiums at the bottom of the page for the Class or Race they belong to. Also add a filter results for the in-app compendium for Sub-Classes and Sub-Races with the ability to filter to only show specific Classes and Races. Currently it is difficult for players to find out what sub-class options and sub-race options are available to them unless they are using the charactermancer. Example of the issue: Notice some compendium's list the sub-classes (Like Ravnica), but others like Wildemount do not. Echo Knight should be there are the bottom on the right image. Instead players and DMs have to search for Echo Knight specifically. This is the same for Sub-Races as well. Some compendiums are just left out.