Best classes for special units

So..as the title says, I took my hard effort in making a list consisting of units and their best potential classes for the unique leaders,

Baulson- Fencer
Darien- Scout
Nora- Guardian
Loki- Ranger
Torgal- Deathknight
Caedmon- Ataraxian
Blocter- Scout
Ludope- Thaumaturge
Violet- Lancer
Emmy- Hunter
Irina- Paladin
Pagus- Sage
Zolean- Sage
Yuniver- Sage
Wyngale- Ninja
David- Assassin
Gabriel- Scout
Maddox- Sage
Sibal- Guardian
Young- Gladiator
Roberto- Thief
Khrynia- Thief
Kate- Druid
Gaou- Druid
Zuido- Bard
Allan- Deathknight
Snievan- Mysticknight
Leucetius- Warlock
Rhagoh- Bludgeoner
Glenys- Cavalier
Hannah- Healer
Hinnah- Alchemist
Jorgen- "Class can't be changed" , for more info please read wiki
Jager- "class can't be changed",
Paris- Commander
Milton- Gladiator
Sheryl- Marksman
Duke- Bard
Leshau- Specialist
Rush- Samurai


Different people have different opinions, but some people mentioned that its very hard for them to reach those classes, and I am curious to know why. Because right now I am also myself playing the game and trying to achieve these classes, also suggested the same list in steamforums.

Most of the classes can be easily reached by simply turning off healing/reviving arts, but it makes the game harder. That's why it may be harder to reach best classes and I agree with that.

Many people also said that blocter is good as an axeman, but I would say that you already have duke for this class and if you really wanna go for this class, then why not go for druid? So if any of you have any questions , suggestions or need clarifications then please lemme know in the comments below.