It looks like you have a few problems! If your satisfied they are getting enough light then its prob overwatred! Do the pots have a drainage hole? When I started collecting succulents they where always in glazed pots with no holes! It looks nice but its just a marketing tactic, they need excellent drainage, a good source of light and low humidity. Your echeveria looks like its struggling, get it out of the pot and remove as much damp soil as you can and lay it on some newspaper for a few days til it dries out then repot into a better draining soil and add some pumice, perlite, course sand/grit/stones anything that will improve drainage and make sure to use a pot with drainage holes!
Your haworthia looks fine to me, is the lower brown parts mushy? Again with the newspaper! If its still firm then it could just be discolored, I would raise it abit so the lower parts are getting more light and have better air circulation! I'm just a newbie but hope this helps!
