Probably Ruiz if he beats Ortiz but the following would also be good fights that make sense. AJ JJ/Parker winner Whyte Hrgovic
Helenius has enough power to KO Wilder. Wilder is a likely win but nothing is easy for him at this juncture in his storied career. And if he loses he'll tell a lot of stories.
I hope Wilder wins and fights AJ next. It’s still a fight people want to see, just not as much as they wanted to see it when both guys were on top. It would be fun to see these two fight before the Fury Usyk fight for sure. Say what you want, Wilder makes the HW picture a little more exciting. I just hope he doesn’t fight no hopers as he waits for another shot at the belts. At least fight Fat Andy, if he beats Grandpa Ortiz.
If Helenius upsets Wilder I think we'll see him and his idiotic fanbase totally go off the rails and become complete lolcows again.