To protect the safety of individuals and the integrity of law enforcement investigations, there is no public "confidential informant list"
You may want to look into how to request official public records via the Indiana Access to Public Records Act (APRA) to see what is legally available. Confidential Informants - IN.gov confidential informant list indiana
If you are looking into this subject for legal or research purposes, here is how the management of confidential informants (CIs) generally functions in Indiana: Legal Protections and Confidentiality Safety and Anonymity To protect the safety of individuals and the