n=1
Keep in mind that during the LONG AD&D2e era the core option was Wizard. And a LOT of us came into that from Basic D&D and/or HeroQuest (with also Wizard). Then came D&D 3e, with the Sorcerer added as a core class, book mage vs. natural mage. Suddenly a lot of folks started playing Sorcerer, it was new, after the initial 'newness' wore off, people just used it as just another non-divine spellcaster option. And while some might look at the power level of the different classes and will choose the most powerful one, most don't.
Many of us skipped 4e, and with 5e adding in the Warlock, many went again for the 'newness'. I wasn't one of those a decade ago though. But with our last campaign (on pause), I needed a non-divine spellcaster, something that was easy to play in and out of the session. Warlock was the one with the least amount of moving parts among the three, not because it's more powerful, not because it's new (to me), not because it's cool (although I made it cool), it was because I had already too many plates spinning and this was the non-divine spellcaster which required the least amount of brainpower to operate... A good choice we found out later, as for a LONG while I was playing this character and also making all the maps/encounters ad-hoc in our Foundry VTT game was started up a couple of sessions after we started playing. Not having too many options is bliss when you're also trying to draw the next chamber and managing the monsters for the DM...
We rotate DMing in our group, and now it's my turn, we started a new party (with the previous campaign on-hold for the next DM). One of the players is playing a Wizard. Why? Because they tend to play casters, Cleric, Bard, etc. in this case a Wizard. In our group, we haven't played an Artificer yet (I think), and a Druid is bloody rare for us. It really depends on what kinda concept we have in our heads at a particular time, and we try to compliment each other's characters (role). How that translates completely depends on your group.