The phrase "across a wide array of" is correct and usable in written English.
It can be used to describe a variety of subjects, topics, or areas in which something is applicable or relevant.
Example: "The research findings were applicable across a wide array of disciplines, including psychology, sociology, and education."
Alternatives: "across a broad range of" or "in a diverse selection of".
Hunt's astute pragmatism and exceptional skill as a chairman, alongside unobtrusive energy, kept him in constant demand until his 80s across a wide array of tasks.
This is being accomplished via the Open Screen Project, where we are working with over 50 partners to make this a reality across a wide array of devices".
While Mr. Gore still outpoints Mr. Bush rather sharply on the environment, Mr. Bush, his advisers say, is doing far better than Bob Dole was at this point four years ago across a wide array of issues.
Our membership needs to be drawn from the cities and regions of our nation and from across a wide array of occupations, including small business people, tradies, farmers, professional women and academics.
T-shaped people have deep expertise in a given subject matter materials science, say but at the same time have knowledge across a wide array of areas, like economics, history, design or marketing.
Free-trade advocates and the WTO have held that WTO-sponsored agreements offer the best means of providing lower prices for consumers across a wide array of products while creating fairer competitive conditions for international suppliers.
It is a strategy that has helped Mr. McAfee get publicity across a wide array of media outlets, as I wrote in an article that appeared in Monday's newspaper.
Viber is available across a wide array of platforms.
"Meta's platform enables a host of new ways to conduct business across a wide array of industries.
Ultimately, a broader community-focused effort can demonstrate how new approaches can scale nationally across a wide array of settings.
A general search of transcriptomic libraries suggested conservation of MARS proteins across a wide array of crustaceans.
