EzekielRaiden
Follower of the Way
Further, at higher levels, they also have Reliable Talent. So not only do they have +[Large bonus] to picking locks, springing traps, and hiding, but they literally can't do worse than 10+[Large bonus]. As long as a nat 1 doesn't mean automatic failure, they're pretty much guaranteed to get through most things. Only Rogues get that feature as a generic, "any ability check" thing. The only other source I know of for that sort of thing is the College of Eloquence, and that only applies to Charisma (Persuasion) and Charisma (Deception) checks, nothing else.However, if one really wants to cleave to the "thief lock-picker and trap-disabler" archetype, the Rogue class has a feature called Expertise, which lets you double your proficiency bonus for a couple of skills, or a skill and thieves' tools. Make the skill Stealth, and you've really got a classic thief, as they're going to be better at those things than even another character with proficiency.
Rogues are still by far the best choice if you want someone really good at dealing with locks and traps (or skills, if they decide not to invest more into their Thieves' Tools proficiency.) Others can mimic part of their shtick, but never all of it.