Take this with a grain of salt......but....
I'm an AVID traditional bowhunter. Early-season temps, here in NC, can see me going afield with temps well into the 80's. I've tried Lacrosse alpha burly (I most always wear rubber boots), uninsulated. Sweaty feet.
I bought a pair of Muck's and ended that. I "think" the ones I have now are called "woody max". You can even roll the upper down, when you want/can.
Like I said, this may be of no use to you (I'm not sure how they're "rated" for chemical apps.).