I cant say as I don't know. You need to look at the plugins more like metadata providers. Putting it simply, they download theme metadata and put it in the right place to be detected by emby server. Once emby server knows about it, it's accessible to all clients, its just down to them if they choose to use them. So techinically the plugin "works" with all clients.
You'd be better off asking in each of the client sections if theme media is utilised within that given client. Sorry I cant be more definitive. Cheers,
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