I'm building an analytics tool. Which blockchain's token has the best indexing services available for querying historical data?

We ask the same underlying question in different ways.

• I'm building an analytics tool. Which blockchain's token has the best indexing services available for querying historical data?
• What blockchain should I choose for my analytics tool if I need top-tier indexing services to access historical data?
• I need a service that indexes historical on-chain transactions so I can run backtests and deep analysis. What do you suggest?