I don't need to go into much more detail except for that accomplices and secondary culprits are not counted.

The First cases:
Dahlia Hawthorne>Kristoph Gavin>Horace Knightley>Jacques Portsman>Ted Tonate>Frank Sahwit>Richard Wellington

The Second cases:
Luke Atmey>Mimi Miney>Patricia Roland>Cammy Meele>Alita Tiala>Redd White>Florent L'Belle

The Third cases:
Aristotle Means(Angry)>Furio Tigre>Acro>Yutaka Kazami>Daryan Crescend>Aristotle Means(Normal)>Jack Hammer(I count him as 1-3's culprit because Dee only acted in self defence)>Lance Amano

The Fourth cases:
Matt Engarde>Manfred Von Karma>Kristoph Gavin>Dahlia Hawthorne>Blaise Debeste>Calisto Yew>The Phantom(Because you don't know they're the culprit at this point)

The Fifth cases:
The Mastermind>Damon Gant>The Phantom>Godot(Amazing character, good-but-not-amazing villain)>Quercus Alba

Phoenix Wright: Ace Attorney Culprits:
Damon Gant>Manfred Von Karma>Frank Sahwit>Jack Hammer (Because even a character you never meet is better than Redd White)>Redd White

Phoenix Wright: Ace Attorney: Justice for All Culprits:
Matt Engarde>Acro>Mimi Miney>Richard Wellington

Phoenix Wright: Ace Attorney: Trials and Tribulations Culprits:
Dahlia Hawthorne>Luke Atmey>Godot>Furio Tigre

Apollo Justice: Ace Attorney Culprits:
Kristoph Gavin>Daryan Crescend>Alita Tiala

Phoenix Wright: Ace Attorney: Dual Destinies Culprits:
The Phantom>Aristotle Means(Angry)>Ted Tonate>Aristotle Means(Normal)>Florent L'Belle

Ace Attorney Investigations: Miles Edgeworth Culprits:
Calisto Yew>Jacques Portsman>Quercus Alba>Cammy Meele>Lance Amano

Ace Attorney Investigations 2: Miles Edgeworth: Prosecutors Path Culprits:
The Mastermind>Horace Knightley>Blaise Debeste>Yutaka Kazami>Patricia Roland (And even the last ranking I-2 villain is still a good villain)

1st cases:
Kristoph
Dahlia
Richard
Naitou
Jacques
Sahwit
Tonate

2nd cases:
Cammy
Miwa
Luke
Alita
Mimi
Redd
Florent

3rd cases:
Daryan
Dee
Tigre
Yutaka
Acro
Aristotle
Lance

4th cases:
Matt
Manfred
Calisto
Kristoph
Dahlia
Bansai
Phantom
Shelly

5th cases:
Mastermind
Gant
Godot
Phantom
Alba

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I'll rank them all in a row.

Luke Atmey>Damon Gant>The Mastermind>Kristoph Gavin>Manfred von Karma>The Phantom>Dane Gustavia>Godot>Horace Knightley>Ted Tonate>Calisto Yew>Matt Engarde>Furio Tigre>Richard Wellington>Acro>Cammy Meele>Dee Vasquez>Dahlia Hawthorne>Blaise Debeste>Quercus Alba>Florent L'belle>Aristotle Means>Jacques Porstman>Patricia Roland>Redd White>Ini Miney>Daryan Crescend>Frank Sahwit>Alita Tiala>Lance Amano

I'm terrible when it comes to these things, so I'll just...

Favourites:
Mastermind
Matt
Kristoph
Manfred
Calisto

Least favourites:
Lance
Alba
Tonate
Sahwit
Jacques

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Sorry if I get off-topic, but "Dane Gustavia" is Yukata's name in English. I'll write my list o' culprits later. e.e

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I know, I just prefer Yutaka Kazami to Dane Gustavia.

The First cases:
Horace Knightley>Kristoph Gavin>Dahlia Hawthorne>Ted Tonate>Frank Sahwit>Richard Wellington>Jacques Portsman

The Second cases:
Redd White>Luke Atmey>Patricia Roland>Alita Tiala>Florent L'Belle>Cammy Meele>Mimi Miney

The Third cases:
Furio Tigre>Dane Gustavia>Aristotle Means>Acro>Daryan Crescend>Dee Vasquez>Lance Amano

The Fourth cases:
Manfred Von Karma>Blaise Debeste>Kristoph Gavin>Matt Engarde>Dahlia Hawthorne>Calisto Yew

The Fifth cases:
The Mastermind>Damon Gant>The Phantom>Godot>Quercus Alba

Everyone > Quercus Alba

Enough said.

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I've never played DD, PL vs PW or the fan translation of GK2, so this is just AA - T&T + AJ + GK1

First Case: Kristoph Gavin; Dahlia Hawthorne; Richard Wellington; Jacques Portsman; Frank Sahwit;
Second Case: Mimi Miney; Cammy Meele; Luke Atmey; Redd White; Alita Tiala;
Third Case: Furio Tigre; Acro; Dee Vasquez; Daryan Crescend; Lance Amano;
Fourth (non-finale) Case: Manfred von Karma; Calisto Yew; Dahlia Hawthorne (I didn't like 3-4);
Final Case: Matt Engarde; Damon Gant; Kristoph Gavin; Quercus Alba; Godot (great prosecutor, bad villain);

Edit:

AA: Damon Gant; Manfred von Karma; Dee Vasquez; Redd White; Frank Sahwit;
JFA: Matt Engarde; Mimi Miney; Acro; Richard Wellington;
T&T: Dahlia Hawthorne; Furio Tigre; Luke Atmey; Godot;
AJ: Kristoph Gavin; Daryan Crescend; Alita Tiala;
GK: Calisto Yew; Quercus Alba; Cammy Meele; Jacques Portsman; Lance Amano;

Overall:

Matt Engarde; Damon Gant; Manfred von Karma; Kristoph Gavin; Calisto Yew; Dahlia Hawthorne; Furio Tigre; Mimi Miney; Quercus Alba; Acro; Cammy Meele; Luke Atmey; Dee Vasquez; Daryan Crescend; Richard Wellington; Godot; Jacques Portsman; Redd White; Frank Sahwit; Alita Tiala; Lance Amano;

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