#6 AJ Styles & #5 Shinsuke Nakamura

Speaking of Champions, as you remember, I did not mention WWE’s mid-card titles holders in an article intro’s disclaimer. The United States and the Intercontinental Championships are the only two in the company, that switched rosters since the last brand split in 2016.
Quite obviously, this list entry is joined. One of the shows can not have both of these championships so if one champion switches brands, the other one will have to do so as well, just like it happened previously in 2017 and 2019.
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The facts, that the US Championship moved over to RAW and the I.C. Title moved over to SmackDown in the spring of 2019 are part of my reasoning for this point. With the Wild Card Rule being in place for the better part of 2019, we haven’t seen both mid-card titles attached definitively to their respective shows and rosters. Half of the year does not feel like a time big enough for a championship to be featured on a given brand.
One, of course, may argue, that, granted the current mid-card feuds in the company, come the Draft time, we can see former 205 Live standout talents Cedric Alexander and Ali both holding the United States and the Intercontinental Championships respectively, not Styles and Nakamura.
Not discarding this option, I can only respond telling, that The Phenomenal One, who recently found a second wind joining Luke Gallows and Karl Anderson in The OC on RAW and The King of Strong Style, who finds himself in an odd alliance with Sami Zayn over on SmackDown Live, both have a lot more to do and achieve on their respective brands at this moment.