I would never place Iger on the same level as Roy Disney. Roy was accurately seen as a more financial half of the two brothers, but that is heavily underselling the man. The way he conducted business was vastly different than Iger. Unlike Iger, Roy actually seemed to legitimately care about the company on a personal level. He showed an admiration and respect for Walt and his creative mind in spite of being a "financial" guy. He clearly seemed to value brother's ideals, even if not everything Walt envisioned came to pass.
https://www.mouseplanet.com/9562/The_Forgotten_Brother_Who_Built_a_Magic_Kingdom
Roy didn't run the company solo for a particularly long time before his own death. But during this relatively brief time, Roy accomplished some incredible feats. Roy oversaw the planning, construction and opening of Magic Kingdom along with developing the surrounding areas. He seemed to share at least some of his brother's creativity (not to that same high degree perhaps, but few can claim that).
I liked the first half of Eisner's era and don't disregard what he accomplished, but I also definitely would not place him alongside Walt. During Eisner's worst years immediately following Wells' death, he began enacting policies of quality cuts to the parks to promote profit growth. The very antithesis to everything Walt stood for. Eisner was far more of a financially-centered person than Walt was, even if he did enjoy the company he oversaw.
As a side note that may or may not be accurate- There's little known about Frank Wells beyond being the "financial half" during the Eisner era. But I suspect that similar to Roy, there was more to him and his involvement with Disney than that. Though I am unsure if he he had any of Roy's own creative talent. I'll also mention that Jeffrey Katzenberg was massively important in getting Disney's film studio back on track. And his firing was probably a significant part of the studio's decline in the late 90s to early 2000s.
