GX.Sigma
Adventurer
Doesn't look like unearthed arcana for 5e. Alas.
What are you looking for in an "unearthed arcana"? I see:
4 pages for Gods of Your World
2 pages for Magic in Your World
6 pages for Downtime Activities
7 pages for Play Style and Flavors of Fantasy
6 pages for Other Rewards
15 pages total for Exploration, Social Interaction, Combat, and Chases
15 pages total for Ability Options, Adventuring Options, Combat Options, and Creating New Character Options