All of the Focals use dual 3.5mm to my knowledge.
The Rosson RAD-0’s do as well
Meze 99’s you need to have very thin connectors because they’re set deep in the cups
I believe the 2nd Gen Beyer T1’s are also dual 3.5mm.
I’d make sure you have slimmer connector housings for the beyers and the 99s in order to use them, and finals are locking 3.5mm which can be hit or miss depending on the cable.
Some of the kennerton and LSA headphones use 3.5mm, higher end sonys also have 3.5mm, higher end denon as well. And the aforementioned rosson, newer hifiman, and focal
Usually on a BTR5 or a DIY desktop amp, but both are 2.5mm balanced. Typically I use them for movies or gaming, if I am on the go, I tend to use IEMs ( which are my work day solution ).
I am debating if Hart cables are worth it. I know the first hit is pretty expensive, but then you just need the correct end for the headphone to the interconnect, which isn’t as pricey as a decent standard cable. On that front I was thinking something like the Tripowin GranVia, but open to other ideas.
From my experience I found the rad-0 pretty meh, and nothing to write home about considering the cost, a bit overpriced even, just didn’t match the technical ability of other options at that price point. But they weren’t bad or anything, just costly for what they were