The phrase "authorities preferring" is correct and usable in written English.
It can be used when discussing the preferences or choices made by authorities in a specific context.
Example: "The report indicated that authorities preferring stricter regulations would likely implement new policies soon."
Alternatives: "authorities favoring" or "authorities choosing".
Wild camping here is illegal, the authorities preferring to point tourists towards money-making, taxable hotels and campsites.
We decline to interview people selected by the authorities, preferring to try finding our own inmates to talk to, but we are bundled away upstairs for a briefing.
The Golden-capped Parakeet forms a superspecies with the Sun Parakeet (Aratinga solstitialis) and the Jandaya Parakeet (Aratinga jandaya), with some authorities preferring to view all three as members of a single, widespread, species.
The relationships of seed-eating birds are the subject of great disagreement, many authorities preferring to place some of these groups in the family Emberizidae, with a somewhat different family composition.
In the past, the mayor has been loath to criticize other government agencies, officials or authorities, preferring instead to assert blandly that everyone will always do right by the city.
The police authorities prefer to look the other way.
However, rather than building brand new establishments, the local authorities prefer to renovate and adapt historical buildings to library functions.
Generally, if consumers are likely to be harmed, authorities prefer to block the merger.
For this reason, many authorities prefer to regard smell as distance chemoreception and taste as contact chemoreception.
Many Indian communities already enjoy much more autonomy than any law would permit, simply because local authorities prefer not to meddle with them.
Some authorities prefer to classify traumatic subarachnoid hemorrhages as a separate disorder from those that occur spontaneously as the result of a ruptured aneurysm or other internal pathology.
