275/60/15 sidewall clearance to leaf spring clamps- suggestions?

Those pictures are with the spacers?

Yikes. That’s still not enough space, especially with the clamps moved. You run the risk of one of the leaves shifting and cutting the tire.

Honestly I’d get a 1/2” spring offset kit from DoctorDiff and just have the spring perches moved. I personally wouldn’t want much more spacer than you already have, but you still need more clearance.
I just looked up the dr diff not bad for the price seems easy to do- thought maybe you had to reweld to kick them in but the kit seems like straight bolt in