Edited, thank you again for information.

Finally got to check out the last 5 prisoners as well :) That should finish up the "main" souls of all the prisoners and hopefully make it a lot easier for people to go after particular prisoners when in need of just one or two souls.

[b]Acidic Prisoner[/b] - [i]Summoner[/i]
[b]Silenced Prisoner[/b] - [i]Jester[/i]
[b]Explosive Prisoner[/b] - [i]Summoner[/i]
[b]Murderous Prisoner[/b] - [i]Ranger[/i]
[b]Temporal Prisoner[/b] - [i]Gladiator[/i]

Thank you for this information. I hope you'll manage to gather information on "main" souls for the rest of Prisoners, since that would make easier to adjust guide, but in any case it's info that future hunters can benefit from. So I'll give you some more time if you feel like figuring out the rest and then incorporate this into guide.

Been hunting souls for one of my lowbies today, and noticed that most of the Prisoners have one particular Soul that they seem to drop more than others (usually 2 or 3), and thought it might be some nice info to add to the guide if you are just missing one or two particular souls:

[b]Umbral Prisoner[/b] - [i]Illusionist[/i]
[b]Dangerous Prisoner[/b] - [i]Ranger[/i]
[b]Diseased Prisoner[/b] - [i]Jester[/i]
[b]Spiritual Prisoner[/b] - [i]Illusionist[/i]
[b]Deadly Prisoner[/b] - [i]Healer[/i]
[b]Burning Prisoner[/b] - [i]Gladiator[/i]
[b]Poisonous Prisoner[/b] - [i]Healer[/i]

Still a few remaining that i didn't get to take down today, but these are assumed after at least 3 kills of each of them (some more than others)
Also you can usually see it by what type of Debuff they debuff you with (It includes the name of the particular soul in question)

Hope that helps in embellishing the guide :) I will try to get a glance at what the other prisoners are most likely to carry :)