Warlock 2024 Phb. Fine, but charlatan is a much easier choice. A warlock could have gained the basic level 1 and 2 warlock abilities from their own research into the occult, coming across an item that instilled eldritch understanding, or worked their way up.

Magic initiate (wizard) is good, but the skills aren’t, and the warlock’s spell list already significantly. This video is sponsored by wizards of the coast.