Only one of my many chargers worked at all (a 2yo no name multiport GAN charger that can keep two macbook pros at 100% during heavy use), but it was slow (around 1.1A) at charging the Pocket and backed off to a trickle towards the end of a charge cycle, so based on this thread I bought some UGreen fast charge C to C cables and a UGreen CD224 charger, which now charges at 1.7A - much better!
I also bought a UGreen PB720 powerbank which is PD2.0 and 3.0 capable. With the supplied cable, I can charge the Pocket at 1.7A, and if I plug the CD224 into the other powerbank USB C socket can charge the Pocket at 1.8A at the same time as recharging the powerbank.
Cables, power brick and powerbank with current amazon discounts cost a little over $100 total. I’m glad I didn’t make do with my only other slow charging brick!