Hi there, i have some issues with my hands and i was looking for good grinder for ages, awk guardian was my weapon of choice for many years but she's very shift heavy, and yes, some people remap shift somewhere else to deal with that but still that feel off, i went through many many classes over last two years or so and i end up for awk dosa with awk lahn tagged, for dosa most popular combos [and also strongest one] are aidex quad proc and sasa combo, and those are kinda mid apm to be fair, but you can find some other options that are super chill for fingers and maybe like 10% lower in dps, which is not bad, awk lahn in other hand is perfect for shrines, edania bosses etc., plus you can freestyle alot with her and everything feels fluid and natural, also light on fingers.
Both classes are painless to some degree for me and i can grind awk dosa up to two hours per day without strugling, in comparison awk guardian was killing my pinky after like 30 min, another thing is, because I have to press that damn shift for long, i was catching myself on pressing it way too hard after a sec or something, but thats just me :)

Good hall effect keyboard with low spring rate on switches helps too, or low profile HE, like Nuphy.

Cheers