Blockhain sizes - Megabyte size of: overall blockchain, BIP158 filters, witnesses, script sigs and script pubkey
Witness stats - Stats about the witnesses, number of elements and bytes used
Number of inputs and outputs - Show how many txs have A input and B output
OP_RETURN - Charts showing the number of OP_RETURN scripts and fee spent per month.
OP_RETURN protocols - Protocols just mean the first 3 bytes of the OP_RETURN data, which can indicate the protocol but it's not an enfoced rule by the Bitcoin consensus.
OP_RETURN sizes - Chart showing the distribution of the sizes of the OP_RETURN scripts since inception.
Script types - Charts showing the script types per month.
Rounded amount - Charts showing the number of outputs which have a rounded amount as value (multiple of 1000)
Native segwit multisig - Analyze segwit input scripts counting the occurence of the NofM
Spent in the same block - Charts showing the number of output which are spent in the same block they are created
Number of sighash type used - Show distribution of sighash type used
Tx, inputs and outputs - Charts showing total number of transactions, inputs and outputs per month
BIP69 adoption - BIP69 compliance, ordered transaction inputs and outputs
Number of tx non-deeply reorgable - Number of transactions with nlocktime greater than confirmation height minus 6