Click on the link below to the Patron Saint Index.
Yes, there are numerous lists available online that provide information on saints and their patronages. These lists categorize saints according to the areas, causes, or groups they are considered to be the patron saint of. You can search for specific patronages to find saints associated with those causes or needs.
For a list of saints and their patronages see the Patron Saints Index.
Go to the link below for an alphabetical list of patronages. This is a fairly comprehensive list but there may be a few missing.
There are tens of thousands of saints, too many to list here. However, the Patron Saint Index lists many of the saints and there patronages.
Go to the link below for an alphabetical list of patronages. This is a fairly comprehensive list but there may be a few missing.
Click on the link below for an aphabetical list of patronages.
Yes, the Catholic Church maintains an official list of saints called the "Canon of Saints" which includes individuals whose heroic virtues and miracles have been officially recognized. This list is compiled by the Congregation for the Causes of Saints in the Vatican.
If you are referring to the Blessed Virgin Mary, her patronages are too numerous to list here. Click on this link for a list of all the patronages of Mary.
Click on this link where you can look up each saint and their patronages.
There are two saints named Quetin but neither shows any particular patronages.
Our Lady of Mount Carmel is one of the titles of the Blessed Virgin Mary and has the same patronages as her. A list of her patronages can be found by clicking on this link.
There are at least two saints named Jason and both became saints by dying as martyrs.
To the best of my knowledge, St. Suzanna has no patronages assigned to her.