The phrase "arranged somewhat" is correct and usable in written English.
It can be used to describe something that has been organized or structured to a certain degree, but not completely or perfectly.
Example: "The furniture in the room was arranged somewhat to create a cozy atmosphere, but there was still room for improvement."
Alternatives: "partially arranged" or "somewhat organized".
The mini-brain contains several types of brain cell, arranged somewhat as in a real brain – in layers such as those of the cortex, for example.
St. Andrew's is built of honey-colored stone, its churchyard full of old stones, old graves, well-kept but arranged somewhat haphazardly.
The horseshoe desk, still in three pieces, was arranged somewhat loosely where it had stood for decades.
"Sextine Cyclus" was a beautifully arranged though somewhat overextended anthology of medieval songs; Jean-Paul Fouchécourt sang them with loving eloquence, and members of the Orchestre de Paris provided a glistening accompaniment.
There are forty-two thousand seats, fifteen thousand fewer than Shea had, all a calm dark green and arranged in somewhat irregular tiers, bringing you much closer to the field than before.
They arrange things somewhat differently elsewhere: among affluent countries, Britain's private‑school participation is especially exclusive to the rich.
Is there a way I can arrange a somewhat top-heavy list of Internet Explorer 5.0 bookmarks into a system of folders? A. Creating folders to help organize your Favorites by categories or other criteria can help you keep track of them, and it is a fairly easy thing to do in Internet Explorer 5.0 for Windows, as well as in the Macintosh edition.
In the earliest dated specimen (1598), different motifs are arranged in a somewhat random fashion on linen.
They will be arranged in a somewhat dense 3 – 4 – 3 pattern, so don't expect too much arm room.
In its 21st-century form the Western xylophone's keys are usually arranged in two rows, somewhat like piano keys, on a stand; to improve the tone, a hollow groove is cut along the underside of each plate.
Control Center simplifies and makes much more useful what was a somewhat confusingly arranged media player/AirPlay/brightness & volume control quick access feature attached to the app drawer in iOS 6. Separating it from that function and making it accessible throughout the iOS user interface via a simple swipe up from bottom is a really big improvement.
