When displaying player names, you need to be able to display 16 capital Ws and the names need to be sanitized. See the Text Filtering → Player Names for details regarding name sanitization.
Relevant Cert Requirements: PlayStation Name Width
When any player name/avatar is displayed in a list that supports highlighting, you should either create button prompts or an in-line menu for the various options (“Add Friend”, “Invite to Party”, “Kick from Party”, “Mute”, “View Profile/Gamercard”). NOTE: While Switch does support showing another player’s profile, it’s not required, so RoCo simply disabled this feature when Nintendo reported it as not functioning properly.
Relevant Cert Requirements: PlayStation View Profile, Xbox View Gamercard
When a player is playing on the same platform, we display their platform icon, but we ensure that we never show any other platform’s icon. When it makes sense, we will show a generic platform and/or input icon.
Relevant Cert Requirements: PlayStation Other Platforms, Xbox Platform Identification
Name Width: When displaying a player name, the display must be able to show 16 capital Ws.
View Profile: When a player is displayed in a list that supports highlighting, you must allow the player to view the other player’s PlayStation profile.
Other Platforms: Sony wants you to identify everyone that isn’t on PlayStation, though it seems to be sufficient to just mark the players that are also on PlayStation.
View Gamercard: When a player is displayed in a list that supports highlighting, you must allow the player to view the other player’s gamercard.
Platform Identification: Microsoft wants you to identify everyone else that’s also on an Xbox.