I don’t really know about ranking but I can go over the builds I know and what is good and bad about them
In terms of mobbing I think Ties That Bind Phasezerker Siren is top tier.
Her ASE Phasezerker builds are usually very well rounded and can use any action skill to suit what anointments you get.
Spiritual Breaker Builds are still very strong and borderline overpowered with the use of Fakegrasp. High mobility high damage and with the right weapons you don’t haft to aim all that often. Best for mobbing but can do some nasty quick boss kills with the right set up.
Melee Amara has some good set ups for boss quick kills but is so gear relient making it a bit un attractiv. It’s a ton of fun to use leveling up and can still do work on M3 but it doesn’t seem to cut it in M4.
She has some other fun Nimbus builds but from my experience it is fairly behind in damage compared to ASE builds.
Seein Dead Barrier/Drone Zane is a god for bossing or mobbing. This has a ton of point and item flexibility which is great. You only need to go about half way down your green and blue tree to get huge benefits.
Violent Momentum Zane is crazy strong and can delete bosses or large groups of enemies with ease. This build relies on sliding so it can be bit tricky to get the hang of.
Cryo Zane is pretty good for general mobbing but struggles when enemies can’t be forzen. Wouldn’t recommend if your doing alot of boss farming. There are better builds for that.
Based on what I have taken in most Moze builds seem to focus around the same set of skills or anointments for different effects. This let’s her kinda meld builds together giving her flexibility on the battlefield with the right array of weapons.
Some or the Road/ ASE Moze is very strong for both Bosses but can be a bit slower in mobbing with all the hopping in an out of IB. This can be mixed with any number of ASE anointments or several of her VH spicific anointments.
Bloodletter/Deathless Moze has some very good raw base damage and survivable. It lacks a Health gate so it struggles on some bosses who hit very hard and very fast. She can make very good use of the Transformer or Big Boom Blaster Shields with this build.
ASE Hunter FL4K is good for bossing or mobbing and has a degree of flexibility in skill point placement.
Fade Away FL4K is less flexible but can be his tankyest builds giving him some much needed survivability. It’s best at mobbing but it can definitely handle bosses just fine.
FL4K has had a rough time with buggy skills and COMs so outside of those I’m not to up to date on other builds being used.
Honestly since launch just about every tree is quite good for leveling up. You don’t really see builds taking fill form until you get a legendary COM. Anointments are starting to become more centralized parts of builds.