I'd put Ortiz on roughly the same level as Povetkin, but thats based solely on the eye test. His opposition tends to be weak for someone of his perceived level so its hard to gauge exactly how good he is. I do believe hes a lot older than he claims to be though and that his big vulnerability. There was a telling moment vs Wilder where at one point Wilder was dazed, throwing nothing and not defending particularly well for nearly a minute but Ortiz just couldnt turn the pressure up enough to finish him off.
Fury looks like no1 or 2 now but heading into the fight he was an unproven quantity due to the inactivity, the drugs, the weight gain and how he looked in his comeback fights. Hard to give Wilders team credit for taking the fight when they only did it because they thought he was done.