After some personal research, cloning usually uses somatic cells (aka non-reproductive cells) to make the same genetic copy of one animal, this is using reproductive cells and combining DNA from two animals, hence the difference. If we're talking about embryo-splitting "cloning", embryo splitting is creating an artificial twin by splitting the embryo into two, they're different from this procedure. All in all, I wouldn't call it cloning, this is more another form of artificial reproduction (https://en.wikipedia.org/wiki/Artificial_reproduction) of which cloning is a category of.

Sources:

https://www.cell.com/cell-stem-cell/fulltext/S1934-5909(18)3... (the actual journal entry)

https://www.genome.gov/25020028/cloning-fact-sheet/

https://learn.genetics.utah.edu/content/cloning/whatisclonin...

https://www.sciencedirect.com/science/article/pii/S111056901...