Among the cutbacks are less spending to produce videos and to support publicity tours when a new album is released.
Among は前置詞で
Among the cutbacks は副詞句もしくは前置詞句
are は spending が単数である以上、is であるべき
と言うことのようです。
There is 構文のような倒置でしょうか。
There is a pen. --> A pen is there.
Among the cutbacks is less spending to produce videos and to support publicity tours when a new album is released.
-->
Less spending to produce videos and to support publicity tours when a new album is released is among the cutbacks.
ということでしょうかね。