Emoji and ZWJ sequences.
Family (ZWJ): 👨‍👩‍👧‍👦   Flags: 🇺🇸 🇯🇵   Skin tones: 👍🏽 👋🏿
Profession (ZWJ): 👩‍💻 🧑‍🚀   Keycaps: 1️⃣ #️⃣