dnd 5e paladin spell slots
D&D 5E - Artificer Alchemist / Warlock = Tons of Elixirs?
Character optimization guide for the DnD 5e Artificer's spell list.
Short rest revamp - Larian Studios forums
By taking just enough levels in Paladin to unlock the ability, and then focusing on a full spell casting class, you will get more and higher level spell slots.
Baldur's Gate III | BEST Warlock Spells (All Levels) - YouTube
Create Sorcery Points is implemented for all spell levels up to level 9 per 5e RAW (Tasha's Cauldron of Everything), and you can use Warlock Spell Slots before your other Spell Slots.