Here’s what I’ve gathered from my own readings, simulator tweaking, and in-game experience:
Pelt C1 - All you need for defensive 101. All necessary attributes are all here. Going any further, you will have a harder time leveling. Try alternating with a different class if you plan going deeper. The only merit would be getting more points for Swash. Everything else is just decent. (Getting this to C3 for the supposed solo challenge.)
Hop C1 - C3 - Finestra. Finestra. Finestra. It increases your block and critical rate chance. I think this is one of the skills that win in both worlds. Care for the Evasion Penalty though. This and a bunch of nasty piercing skills. Synchro Thrust for the win though!
Cataphract - More health from riding your pet and the resulting mobility that it has. Not sure how many circles you need to maximize the effect. Read that Earth Wave cleans house real well.
Rodelero - Slithering, the infamous Slithering. I hope it is really designed to work that way, giving 10s Magic Immunity. This supposed to be a great class with all its CC capability. Sadly most don’t work on bosses and some just flat out need rework. (Still getting this to at least C2. Fingers crossed for the supposed buff.)
Fencer - If you build into DEX, evasion increase will help in Tanking. And everyone is saying that it holds up pretty well in the damage department.
That’s about it. Other classes, in my opion are more Damage oriented. Which I made clear, is necessary for making “tanking” easier. Less enemies. Less Time mobbing. More time for 