Multicolor Rainbo - bottom row, second from the right in your fist pic. Also, second from the left in the bottom row, and far right top row.
Also looks like a MK 3rd from the right, bottom row.
These are Multicolor Rainbos as opposed to Multicolor Swirls, which have a swirly pattern. Miller Swirls are National Line Rainbos (NLRs) and are a whole different beast. You can find many of the Peltier NLRs with a Miller Swirl pattern
The top ones look more like Heatons to me. If there was more/better yellow on the bottom left one you'd have an Alley Superman (from St. Mary's), it might pass for a weak one now. The lower right may be Alley too but since there is not a lot of contrast in the colors the reflections are making it tough to evaluate.
The St. Mary's location was Alley's 4th and operated from about 1937-49. And you are correct that they produced more marbles with aventurine there than at any other site, which is not to say that there was never any AV on earlier ones.
Lot's of study - it is usually based on colors and style.
If you are interested in Sistersville Alleys, below is a pretty good place to start studying . . .
Here is a description from Alan Basinet's ID site: Sunsets are those that have a transparent bubble-filled clear base with red, orange, or yellow and white ribbons.
This is true, they are random swirls and there is lot's of variation around the mean. Some are excellent examples of the type, some are average and others are poor examples. And that is usually reflected in their collectible and monetary value.
I don't think yours is an Alox - more likely from one of a few other makers. Many white swirls on transparent bases are very difficult to ID with certainty because several companies made these type of swirls by the millions. And given that they are random swirls there tends to be broad variation around the "average" swirl from any given company and many simply cannot be identified with any certainty. While it's always nice to know the ID of a marble with some degree of certainty, the fact is that the collectible and monetary value of these types of swirls really doesn't depend on who made them - it is minimal, regardless.
It's a Vitro and some of these were packaged with Yellow Jackets, although they are not usually considered to be Yellow Jackets because they lack the colored equatorial ribbons. They are closer to an All Red, IMO.