Handshake: medium-dark skin tone, dark skin tone emoji π«±πΎβπ«²πΏ is part of the People & Body and Hands emojis. On some systems it can be accessed by using :handshake_tone4-5:, :handshake_tone4_tone5: or :handshake_medium_dark_skin_tone_dark_skin_tone: shortcodes.
It was approved as part of Unicode in 2021 so it should be displayed properly on newer devices.