If they're vintage, i.e. pre-1970, then odds are Alley for large swirls.
(If newer than 1970 than that basically jumps one up to the 1990's or later and gives you Jabo or Vacor, but most of yours do look older.)
Interesting. I guess I'm not too worried by it. If I get back to selling on eBay I'll just be happy if I ever get over $600 again in a year. I did at least once -- had a couple of months of sales in 2016 and the total exceeded that. But just the sense that eBay keeps changing things ... even if I don't know about recent changes ... drags down my motivation to get back to it.
We had visitors for the past couple of weeks -- my girls liked the visitors' vertical litter box. That's what the first picture above is about.
Then with the visitors gone, the girls enjoyed having their living room back. They were actually relaxed for the middle picture. Then in the last picture where they reached out to each other, Bear got tense. See her ears laid back. There was a spat after that.
But so much progress. Very happy.
My big girl Bibi (age 5) and my little girl Bear (going on 9 months) are finally starting to be able to be near each other without going nuclear each and every time. Still not perfect. But so much better than in months three through seven.
That is a nice sampling of marbles from different eras.
A good start to the hobby.
Make sure you keep these together with a note that they were from your grandmother. I mention this because once you get into marbles it's easy for them to start rolling around together and things you think you wouldn't forget start to get fuzzy. So start documenting early!
And welcome!
How did I miss this topic?!
"Fire Opal", by the way, was the winning name in the Prize Name contest. That winning name was supposed to be what the two color opaque corks were called from then on. But instead the weird "Prize Name" label stayed attached to the corks and "Fire Opal" got pinned on the colored flinties you mentioned.