List of vegan sources of biotin along with % daily intake recommendations for adults for a 2000 calorie diet and expressed in mg.

References:

https://ods.od.nih.gov/factsheets/Biotin-HealthProfessional/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1450323/

https://books.google.co.uk/books?id=XMA9gYIj-C4C&pg=PA212&lpg=PA213&focus=viewport&dq=spinach+for+biotin#v=onepage&q=spinach%20for%20biotin&f=false