Someone can correct me if I’m wrong, but the cardinal (in red) might actually be St. Jerome? There’s not a whole lot of canonized cardinals to choose from, especially with that kind of beard— and the open book in his lap might be a reference to his work with the Latin vulgate. Cardinals didn’t actually exist in his time period, but it doesn’t keep a cardinal’s trappings from being associated with him.
The pope with the triple-tiered crown might be Pope St. Gregory the Great? I’ve seen him depicted beardless in several representations. Might also be Pope St. Leo the Great, who also sometimes gets depicted beardless.
I think you’re right-- the guy in brown in the front left is probably St. Francis. It’s a little blurry, but I think that’s the stigmata in his hands.
If that’s the case, his symmetrical counterpart in the front right miiiiiight be St. Claire of Assisi, with her arms full of roses?
The guy in black with the staff and the book in front of the St. Francis(?) miiiiiiiight be a St. Benedict?
And if that’s the case, his counterpart in front of the St. Claire-maybe miiiiiiight be a St. Scholastica?
One of the two tonsured guys in gray in the front row might be a St. Dominic. I’m not familiar enough with the habits-- my first instinct was to say the guy with the gray cowl might be the St. Dominic, but I usually see him depicted with a black cloak of some sort, so that throws me a bit.
But if the guy on the end is St. Dominic, it might make sense for the woman at the very edge who looks like she might have a heart with a crown of thorns— she might be St. Catherine of Siena?
That’s the best I can do; most of them are educated guesses, but you can compare them to other artistic representations and see if those guesses make sense to you. I can’t tell you how many paintings and statues need little nametags on them to fully appreciate who and what is being depicted.
