Given all the other things in the game, I would find it curious if Larian can't manage a one time selection involving all cantrips.
And if I have a choice of all cantrips then I'm not sure I really like those picks, at least not in every context.
Guidance is a great choice, obviously.
Vicious mockery does insignificant damage, but also imparts a single target debuff, so it isn't quite terrible. But it competes against eldritch blasting the target and has no utility value out of combat. The big bads that you want to debuff with this can probably either make their wis ST or hit despite disadvantage, and anything smaller can be EB pushed.
Thorn whip does minor damage and pulls the target, which is nice in a few circumstances. Good when someone's standing on high ground and taking shots at you. Fits a "move them around" theme.
But I would also consider acid splash for the surface effects. Having acid pools around to annoy enemy mages could be very useful. I would consider ray of frost for mostly the same reason. Toss a water bottle, ray of frost over it, and now everybody is falling down, while you're just standing tall and eldritch blast punting everything back on the other side of the ice. Then there's shocking grasp. It's not that great but it does offer lightning damage, which synergizes with water, and it provides safe disengagement on top, in case you can't EB punt a target away.
And then there's thaumaturgy for the dramatically inclined. It might seem like overkill but if you really want to make your intimidation checks then 20 cha, guidance, proficiency, and thaumaturgy all combined really ought to do it.
And then of course there's light, in case you just like to be able to see in the dark without darkvision.
