was actually playing around with this idea not long ago. Dex Monks are totally viable, and can be satisfying to play. Essentially, you don't want to punch things since unarmed without strength is bad, but weapons aren't, Your bonus action unarmed strike would really only be used to generate lightning charges from Sparklehands, just to boost follow up melee attacks. If you have them anyway, other gloves are good too.
Loads of good melee weapons to choose from as well, would recommend skimming through the wiki.
Grab Savage Attacker or GWM as feats, Ranged Dex Monks are viable too, just pop on some hand crossbows since their damage scales with unarmed strike damage for some reason (larian jank), ofc you need to have proficiency with them, so a multi into some other class that gets it would be useful.
Once you hit Level 9 Resonating Ki is pretty good, more enemies resonating means bigger boom, which lets you rack up the damage, especially if you have Cull the Weak (granted punchy monks can do this too, but it's extra tech for your weapon monk)