Not S2 of SL. It was it’s best season for that expansion overall.
An accurate rundown since SL start would be:
S1 Shadowlands: C Tier (ultra squishy, no new talents, bad scaling, played Night Fae, could only kill every 90 seconds with The Hunt and if that didn’t kill, you were back to running, giving healer panic attacks and waiting for next one)
S2 Shadowlands: A+ to S tier due to many required buffs and Necrolord. Necro classes had great synergy with Kyrian classes and were tankier.
S3 Shadowlands: A- tier after multiple nerfs to this from S2, but was still good, just not very strong or OP.
S4 Shadowlands: B- tier after every spec in the game that wasn’t Outlaw Rogue, Fury Warr and Feral was unviable. 2 of those 3 specs hard countered the class by default, and were made completely unkilable as well.
S1 Dragonflight: A+ tier for 2 weeks, nerfed like 10 times in a row, slowly shifting to A > B+ > B- tier. Became extinct and didn’t exist during Ret patch, as it was already nerfed about 5 times in a row by that point as well.
S2 Dragonflight: B- to C+ tier. Was largely left untouched since late S1, while other specs saw buffs. Was the squishiest melee in the entire game, especially in Shuffle, due to lack of buttons to press and damage was lower than other melees like Windwalker, who had more CDs to survive and more damage. Your only way of winning was via playing with super strong class partners that were OP at the time like Boomy or Aug, and it wasn’t equal, you were more like a debuff / stun bot and your teammate’s dmg was more important and bigger.
S3 Dragonflight: S+ tier to A+ tier over the course of the season. Rework numbers were too high for a while, so it was the best melee for about 2 months. FOTM material. After many nerfs, people started playing a completely different talent tree build, which turned out to be good, and kept the class very strong. That was also nerfed, but still the spec remained strong. People stopped crying as the FOTM rerollers went other classes by mid - late season 3.
S4 Dragonflight: With the introduction of Fated Raids, you could now have magic damage proc effect items which resulted in a resurface of the spec, and it was between A+ and S- tier. It received multiple nerfs once again, bringing it more around a solid A tier. Mid to late season of S4 DF was about as balanced as the class could be, since you could win most games with it if you play good enough, but wouldn’t do anything too strong to be considered overpowered, and had many matchups which generally sucked for you.
To me mid to late S4 was the best balance state it had, since it was more based on how you play whether you win or not, other melees were on the same level and you had your hardcounter specs that deleted you.
S1 of TWW (so far): C to B- tier. Multiple bugs with talents, which we reported since Beta, are still unfixed. Multiple talents which existed for like 5 years - removed with no explanation.The buffs done are not exactly in the correct direction, and don’t change much. Item scaling isn’t great because you lack too much mastery. You don’t have a single ability that crits people for more than 1 million, when total hp pools are 6.5-8 million.
So yeah, you want accurate history, you get that. Ups and downs. From S1 SL to S4 DF there were 8 total seasons. 3 of those DH was very strong to strong and 2 of those it was strong to okay-ish. 3 others it was completely garbage.