Miscellanist

Punjab Notes and Queries […] was ethnographic and miscellanist in nature, but its organization was confused.

Source: wiktionary

Leigh Hunt tried almost every conceivable kind of literature, including a historical novel. […] All this we may not unkindly brush away, and consider him first as a poet, secondly as a critic, and thirdly as what can be best, though rather unphilosophically, called a miscellanist.

Source: wiktionary

Professor Sadler relied heavily on a voluminous work (still unfinished, although some 60 volumes have already been published) by Tokutomi Iichiro, History of the Japanese People in Modern Times. Unfortunately, this Japanese journalist, a prolific writer and a miscellanist, is not accepted as a historian among scholars.

Source: wiktionary

In Miscellaneous Reflections, however, Shaftesbury's approach underwent a significant change. Although the miscellanist persona's presence there is felt in a relatively small part of the work, his ironic celebration of the modern art of patchwork wit and his other manufactured ironies recall Swift's satiric ploys in A Tale of a Tub.

Source: wiktionary