I found a few invented forms which appear to be exclusive to The Study and Writing of Poetry; American Women Poets Discuss Their Craft, 1983. The book is a collection of essays from 50 American women poets, each essay provides insights into a multitude of topics from poetic genres, stanzaic forms, to writing techniques. This book provided some addition insights and background information on several stanzaic forms that I thought I had researched fully. I liked this book, it pays attention to the details.
• The Onda Mel is an invented verse form introduced by Renelda Gibson.
The Onda Mel is:
○ an octastich, a poem in 8 lines made up of 2 quatrains.
○ syllabic, 8-4-4-8-8-4-4-8 syllables per line.
○ rhymed abbacddc.
Pasted from http://www.poetrymagnumopus.com/index.php?showtopic=2008#anna
My thanks to Judi Van Gorder for years of work on this fine PMO resource.