Logass Sutra (Loggass Sutra) is commonly treated as a devotional stotra in Jainism, rather than a single, uniquely attributed authorial work in the canonical line. In traditional Jain practice, it is recited as a bhakti-oriented composition (Chaturvishati-stava style) and, like many stotras, has been passed down and expanded by various Jain teachers and devotees over time rather than being credited to one identifiable author in the canonical scriptures. Different Jain traditions may emphasize it slightly differently, but there isn’t a universally agreed, sole author for Logass Sutra in the Digambara or Śvetāmbara canon. You can read more here