Going to go a bit against the grain on this one and recommend SecretLab. It does have that "gaming chair" aesthetic, but it is a great chair IMO.
I work from home, sit on my ass for 8 hours straight, and occasionally game right after work into the evening. I can park my ass in that thing and sit for 16 hours no problem (obviously getting up to take short breaks etc). It is super comfortable. I own the mesh one, instead of the leather/pleather, and I think it's the way to go.
Furthermore, the customer service is excellent. I needed to replace the armrest after 4 years as it was beginning to crack. My model didn't come with the snap on/snap off armrests, so I had to send an email to customer support to see if there was something they could do. Not only did they inform me it was actually easily replaceable, they sent me instructions, and gave me 50% of the replacement cost, which was only $20CAD, as I was just over the warranty at that point. It might be a 3 year warranty, but I can't quite remember, possibly 4.
My circle of friends largely work from home as well, and many of them have SecretLab chairs, and they also love them. No back problems, super comfy, breathable.
The only downside I can really think of is that it is a fairly heavy chair, as the base uses a large amount of metal, and the price tag can be expensive, at around $500-$700CAD if you purchase new.
They are also sized to fit your height and weight. I own the Titan 2020 model, and I love it.
Hope this helps!