The phrase "differ markedly from those" is correct and usable in written English.
You can use it when you need to emphasize the distinction between two groups or sets of items. For example: "The trends in technology have differed markedly from those of previous decades."
And their health concerns differ markedly from those of older people.
Elections also differ markedly from those elsewhere in other respects which, critics charge, makes organised challenge to City consensus all but impossible.
The crystal structures and the properties of intermetallic compounds often differ markedly from those of their constituents.
The restrictions and requirements for a ticket bought from an online discount travel service, for example, will differ markedly from those for a ticket bought directly from US Airways.
The only witnesses — Rufus Youngblood and Marie Fehmer — heard just one side of the calls, and their impressions of what occurred differ markedly from those of Katzenbach, to whom Robert Kennedy spoke both between the two calls and immediately afterward.
His successor, Aboud Jumbe, had been a leading member of Karume's government, and, while his policies did not differ markedly from those of Karume, they appeared to be moving gradually closer into line with mainland practices.
On the other hand, if the policy preferences of the affluent differ markedly from those of others, this could have major effects on what sorts of public policies are enacted and how our political system should be judged.
Frictional properties of plastics differ markedly from those of metals.
However, the characteristics of these layers differ markedly from those of the PDE.
On the other hand, current aspirations of Masdar Institute differ markedly from those of the USC.
The results obtained here differ markedly from those presented in the existing literature.
