I have employed different concepts for Orc.
One concept is, Orc are a species of genus Homo, comparable Neanderthal, Denisovan. Likewise, Halfling is comparable Homo floresiensis. In this case, their being nonmagical and naturalistic is important. There are different kinds of Orc, including hunter-gatherer roaming flatlands. The Halfling is mainly a 4e medieval river nomad.
An other concept is, the Orc belong to the creature type Giant, speak Giant, and are one of the many species of Giant. In this case, they are Elemental creatures.
I never employed the old-school piggish Orc. But I am aware of this concept.
I also never employed the Tolkien fallen Elf concept. That would make the Orc fey, which for me, for D&D, feels off.
If I use Orc again, I am interested in diversifying them, so there are different kinds of Orc cultures.