When using api v5, I encountered the following problem.
If we get api.twitch.tv/kraken/streams?game=<gameName> i get arrays of stream. Each stream contain channel object and field "broadcaster_type": "" always empty.
If we take the <channelId> from the above request and get api.twitch.tv/kraken/channels/<channelId> field broadcaster_type will be filled properly like “partner”, “affiliate”, or empty “”.