These wavey textured letters match the wavey number set found here: https://social.thangs.com/m/305538

See here for video: https://youtu.be/05MeHJnXIxM

Other letter sets:

Wavey: Letters: https://social.thangs.com/m/305534 Numbers: https://social.thangs.com/m/305538 Lichen: Letters: https://social.thangs.com/m/172431 Numbers: https://social.thangs.com/m/177028 Geode: Letters: https://thangs.com/mythangs/file/791222
Numbers: https://thangs.com/mythangs/file/791233 Cracked: Letters: https://than.gs/m/895475 Numbers: https://than.gs/m/895477