The Rogue class in Diablo 4 is both much more customizable and much more specialized; their core abilities are centered around the use of swift swords, daggers, bows, and evasion of enemies' attacks. Certain talent trees and faction quests will let Rogue players unlock new abilities such as shadow magic, the ability to exploit enemy weaknesses, or imbue their weapon attacks with elemental damage Diablo 4 Gold.
The Barbarian class technically first appeared in the Diablo: Hellfire expansion, but was fully realized in Diablo 2 and Diablo 3 as an aggressive warrior archetype that devastates enemies with whirlwind attacks, battle frenzies, forward leaps, and various war cries. The skills and talents of the Diablo 4 Barbarian are organized into new categories, but many of their abilities are essentially the same in form and function.
In Diablo 4, the Druid seems to occupy the middle ground between the Rogue and Barbarian (mostly non-magical classes centered around weapon mastery) and the spell-casting Sorcerer and Necromancer classes. Their magic skills let them harry foes from a distance with conjured storms and blasts of rock, their shape-shifting skills let them morph into were-creatures with close-range claw attacks, and their companion skills let them summon animals and plants to fight by their side.
Conceptually, the Sorcerer/Sorceress of Diablo 4 (the terms varying depending on player customization) is essentially the same as the Sorceress from Diablo 2: they're both masters of elemental magic that can deal a lot of damage, but can't take much damage in return. The various spell skills each iteration of the Sorcerer/Sorceress wield even share the same general elemental categories of fire buy Diablo IV Gold, ice, and lightning wielded as projectiles, AoEs, or defensive barriers.