In 5e most magic items are potions of healing or +1 swords and similar.
In fact this is untrue, and easily verifiable as such.
If that's been a reflection of the home games you've played, then you have my condolences, because in 5e Magic Items make up one of the largest sections in the DMG, and the intro to that section makes clear that what is presented, as broad as it is, is not supposed to be an exhaustive list - it gives guidelines for creating more magic items in line with the design balance of the system (Which Larian aren't really following except by occasional coincidence)
Most magic items - or at least the highest in nurmeric volume of individual items, in 5e, are actually in the wondrous item category, which is the catch-all category for any magic item that isn't equipped or worn in a specific way.
