The only class I think begs to dip for 1 level, is MonkX into Rogue1 (2 x expertise, Nick mastery, sneak attack) - they get a huge damage boost out of it if they want to go with a dual-blade ninja aesthetic (that also gives them a ranged option with a dagger, whose d4 damage die gets replaced by unarmed dice anyway). It gets you a big skill boost and damage both, and slides into a build smoothly at any point.
Now, Wizards tried to make Warlock dips even more appealing in 2024, but the continuing main attraction, a proper Eldritch Blaster requires 2 levels, which delays your progress elsewhere (such as feat gain!) by a lot. A single-level dip for Charisma-fighting + short rest spell slot might look appealing to Paladins, but... how many short rests are you really taking over a day? And why not just pick Magic Initiate: Shillelagh as your origin feat?
I'm glad there's multiple ways to fight without the physical stats! But that single stat focus sets other limits on you, main one being that combat feats still raise just str/dex. It's a valid extra build option, but I think it's more for people who are going to pick stuff that isn't the usual combat feats anyway - Chef / Fey-Touched / Inspiring Leader / Observant / Shadow-Touched / Telekinetic / Telepathic / Warcaster...