Others in general - not Jabos - could be an Alley or other West Virginia company swirl type or a Vitro, etc. There is a possibility that they are all Jabos since there are so many different variations to the classics and just seeing one view (or partial) view of the marble makes it hard to tell. For ecample, there is one to the left of center - white with a green ribbon outlined in darker color that could be other than Jabo. Nothing definitive.
Ignoring the left two, the middle is possibly a Japanese Wales type patch that is similar to a Vitro Conqueror. Lower left is MK Rainbow Red and upper right is basic game marble (made by many) in Chinese Checkers sets, etc.
I haven't seen Ro on this Board for years. Not sure how to catch him. He does have a page on Facebook but has not posted there for a couple years. Good luck in contacting him and with your glass blowing.
I am listing a few duplicate marbles books and some magazines with marble related covers or articles this evening on eBay. Might be something that you are looking for. Will also be listing some marbles soon, probably over the weekend. Thanks for looking.
https://www.ebay.com/sch/arasmus/m.html?_ipg=50&_sop=12&_rdc=1