Cleo.
Perfect balance distribution of stats now, she does everything Hunter & Zerk set out to do but better. At 1450 HP she has a 200 advantage over Hunter, City & Elder whilst also having access to 1300 Energy which regens 90 points per second, putting her on par with Elder’s energy capacity & usage. She also moves at 9.9 metres per second, 0.3 faster than Hunter & only 0.1 slower than Scout & City. 13 Gear Points means she can take Heals, Bear Traps & even Motion Trackers which covers ever utility you could need.
Her only real downside is relatively small Stamina pool of 1050 but it actually does regen pretty fast at 135 points per second and considering her best Spec is Stalker which grants her a 15% damage buff to everything so long as her Stamina does not go down she ends up as both a Tankier AND Faster Elder option with a Spec which grants a more universal damage buff than Hunter’s option of Fervent.
11 Perk Points means she can run very versatile builds too as she is perfectly capable of running say Large Pouch & Medic with either Adrenal Boost to cover her Stamina problem/buff Stalker’s utility or Down Range to grant her a +25% Ranged damage buff & with 2 extra uses to every Gear item she takes on top of Medic speeding up healing by 45% which combined with her overall natural tankiness makes it relatively hard to actually punish Cleo and keep her from coming back with her pressure.
Hell she even has +13% melee damage passive which whilst Melee is near universally useless, does means she already starts at an advantage over most other classes if push comes to shove/in honorable 1 on 1 duals.
Even though the game still very much universally favours Fireteam to ludicrous amounts, Cleo represents a good breath of fresh air in that she really has no downsides as a Class and is built in a much smarter way than the vast majority of other classes in the game, making her somewhat live up to her lore in-universe and feel more fun than the majority of her peers. Any problems encountered with playing Cleo don’t come down to her actual build I’d say, but in fact she really only suffers from being subjected to the amount of power that the FT side currently wields and that ultimately is something every Predator must contend with: so Cleo remains potentially as of the time of this writing your best option to fight it.
A far cry from say Berserker who is definitely objectively the worst class in the game and has been for over a year. Not only does Zerk have to contend with the game being massively FT favoured, but just being a poorly designed & made class in general.

