The phrase "are multiple forms of" is correct and usable in written English.
It can be used when discussing various types or categories of something, indicating that there is more than one way to express or represent it.
Example: "In the study of literature, there are multiple forms of narrative structure that authors can choose from."
Alternatives: "exist various types of" or "have several kinds of".
There are multiple forms of hereditary amyloidosis.
It then lists off the relevant "concerns": "strike activity is low, wages are responsive to economic downturns and there are multiple forms of employment arrangements that offer employees and employers flexible options for working".
There are multiple forms of oppression and repression that make revolution desirable.
There are multiple forms of the Duffing equation, ranging from dampening to forcing terms.
There are multiple forms of media that are being played through there that people are consuming, at the retail level.
The interpolation methods currently assessed by the system are multiple forms of kriging, thin plate smoothing splines, inverse-distance weighting and trend surface/polynomial analysis.
Guidelines, there are multiples forms of guidelines.
There is the world as it is – multiple forms of capitalist economies deploying raw power to do just as they please – and a utopia of freely floating exchange rates, free trade, free financial markets and tightly controlled government budget deficits.
Among Boatwright's few possessions were multiple forms of photo ID, in the name Michael Boatwright, including a Department of Veterans Affairs ID, and a recently-used passport.
Actually, butyrate kinase from C. acetobutylicum has been reported to exhibit reversible activities, and the discrepancies in specific activities in the two directions suggest that there may be multiple forms of the enzyme [ 2, 39, 40].
Current research has now shown that there are multiple forms, or alleles, of the W gene.
