What Kind of Magic Was Used to Create the Marauder's Map?

Question

When considering canon-based spells, potions, and quasi-sentient objects such as wands ¹, what type of magic was likely used to create the Marauder's Map? I was thinking Homenem Revelio might be involved, but I can't recall any other object in Potterverse that acts quite like the Marauder's Map.

Is there a canonically-based explanation regarding the magic used in the creation of the Marauder's Map?

_{¹ JK Rowling: Essentially, I see wands as being quasi-sentient. I think they awaken to a kind of- They’re not exactly animate, but they’re close to it, as close to it as you can get in an object, because they carry so much magic. So that’s really the key point about a wand. Pottercast Transcript - The Leaky Cauldron - 01.02.08}

Answer 1

The Weasley's clock is similar to the map in a few ways. The clock tells you something about a person's current status. The map reveals a person's current location. One difference is that the clock is for a set group of people and the map reveals information about a set physical location.

It seems similar magic would need to be done to create both items. I don't recall any explanation for how the clock was created or what 'type' of magic it required to be created but at least I think this shows that there are objects with similar types of magic associated with them.

Answer 2

According to J.K. Rowling on Pottermore, the following type of magic was used to create the Marauder's Map:

The magic used in the map's creation is advanced and impressive; it includes the Homonculous Charm, enabling the possessor of the map to track the movements of every person in the castle, and it was also enchanted to forever repel (as insultingly as possible) the curiosity of their nemesis, Severus Snape.

_{POTTERMORE - Harry Potter and the Prisoner of Azkaban - Book 3 - Chapter 10
HARRY POTTER WIKIA - Marauder's Map - VERIFIED}

Answer 3

At a fundamental level every enchantment, even one as powerful and complex as that of the Marauder's Map, is just the result of a charm, so creating a new enchantment boils down to creating a new spell.

Most enchantments are static, they just do the same thing - for instance, fly or follow Quirrell around, bouncing off his turban. Ones that need to do more, the map in particular, I think require another level of skill. The way I see it, more complex enchantments need to effect magic when they're activated/used/whatever. This requires that the spell used to create the enchantment include, essentially, a spell to "cast" on demand, in effect an anonymous spell. (λ-spells!)