Hi Sam,
• I don't think DataHub does DSAR's. This requires entity correlation which I don't think DataHub does. I couldn't find anything in any case (might be wrong though). Not sure what you mean with data flow mappings. If you mean pure lineage, then Data Hub can help, but I don't see how that is required by privacy regulations. If you need a RoPa, then you need to look for a privacy vendor like OneTrust.
• BigID and
Securiti.ai are specialised in Data Classification, Data Flows, and DSAR.
• Privacera and
www.raito.io help with access management. Privacera uses the proxy approach which is falling out of favour. Raito uses the code generation approach which is much easier to deploy, has no performance impact, and has a much shorter time to value.
Question: Are you looking to improve privacy on analytical data only. Or is it also on operational data? This has big implications for the scope