A high-quality PBN today is less about metrics and more about history and relevance. The most important factors are a clean backlink profile, topical match to your site, real past use (not spam), and natural content rebuild.
Many PBNs show no traffic or keywords because they were dropped, deindexed temporarily, or never rebuilt properly. DR/DA can be misleading. Low OBL helps, but relevance and link quality matter more. Truly high-quality expired domains are rare and expensive, which is why supply is limited and most PBNs today are average at best.