Oracle Miner has created a tool to view a wide range of metrics on any Indexer you wish.
Head to https://oracleminer.com/graph/indexers/ to begin your Indexer search.
Each Indexer will have their own unique page where the metrics can be refreshed on user input. Here is an example of the Oracle Miner Indexer page: https://oracleminer.com/graph/indexer/0xbfe2a198cb0cdfb50fb03cd932c7387ddb0d25aa. Simply replace the address at the end of the URL with the address of the Indexer you wish to view.
We’re always looking to add more metrics and would love the input of the community on any requests or feedback they have!