I don't think you can really make a definitive fight by fight case as I believe in most encounters between top level fighters the result could vary if they fought multiple times.

Certainly he would be very hard to beat imo. He could definitely be stopped by any of those guys, but if he's able to protect himself, and I imagine he would fight very cautiously he would definitely win some of those fights imo.

I'm not sure I would rate Wlad as highe as any of those guys historically, as he's not had the defining opponents but he's been completely dominant and it would just be ignorance and hating to insist that the others would all smash him. Just because he's a bit chinny and not hugely exciting doesn't mean he's not effective.

Both Klitschko's would rise to the top in any era imo.