The phrase "varied from being" is correct and can be used in written English.
You might use this phrase to describe how something has changed or developed over time, for example: "Her career has varied from being a cashier to a CEO of a major company."
Reasons varied from being unable to afford enough food, to loneliness and isolation reducing people's enthusiasm for eating properly, and difficultly getting to the shops.
When compared on the basis of ΔK, growth rates in the plate specimens varied from being little different than those in rotating bending specimens to approximately four times higher, depending on strain amplitude.
Half of our sample was exposed to civil reader comments and the other half to rude ones — though the actual content, length and intensity of the comments, which varied from being supportive of the new technology to being wary of the risks, were consistent across both groups.
T2 varied from being the first (lag 1) to the eighth item (lag 8) after T1, and was always followed by at least two additional distractors.
Championship by ED directors varied from "being distant" to being committed to communication and sharing.
The professional medical experience of interviewees varied from being a physician in training to having 26 years of experience.
Granted, the process may vary from being highly structured, like an expert panel process, to highly unstructured, like the processes for scientific advice during crises and emergencies.
Depression is one of the most difficult stages in the cycle, and can vary from being a lifelong predisposition of low mood to depressive phases that vary in intensity.
The noise level in digital images may vary from being almost imperceptible to being very noticeable.
The institutional architecture could vary from being top-down under scale economies to bottom up under scope economies.
Because these effects are small, they can vary from being statistically significant to not significant, or vice versa, from one experiment to the other.
