TradFi index maintainer S&P Dow Jones has produced very broad, but composable crypto indices:
S&P Dow Jones Launches Five New Crypto Indices - Decrypt
In brief S&P Dow Jones Indices has launched five new indices for tracking the health of the crypto market. The company launched its first crypto metric earlier this year. Data provider S&P Dow Jones Indices has added five new indices to its existing roster of crypto market benchmarks, per a press release.
S&P Dow Jones Indices Launches S&P Cryptocurrency Broad Digital Market Index
NEW YORK, July 13, 2021 /PRNewswire/ -- S&P Dow Jones Indices (S&P DJI), the world's leading index provider, announced today the launch of its latest cryptocurrency indices including the new S&P Cryptocurrency Broad Digital Market (BDM) Index. The BDM provides a wide performance snapshot of the cryptocurrency market and includes more than 240 coins at launch.