Why are some old (2017) Coinbase statement transactions not appearing in blockchain.com? (Ex trying to take all crypto I had him manage for me)

I'm tracking down transactions from 2017. The statements in coinbase clearly show 'Purchase' when I bought Ethereum. They also show the full wallet addresses of where I sent Ethereum to. I was using blockchain to track down all activity of the wallets I sent the ethereum to and as an afterthought, I checked my own on that site to double check that the statement information is what's consistent but it's missing most of the transactions. I am separating from my spouse who's had financial control and is the only one with access so is counting on my crypto ignorance I'm sure. I want to be as armed with as much ammo as I can. My goal is to: Show that our investments here were certainly intertwined right before actual marriage Identify and catalog as much of whatever he has in crypto - This is why I started looking up the wallet transactions of the ones I had sent to and is why it's important that the information there is correct. How to search transactions between currency conversions? I think we may have gotten/exchanged for Litecoin but my statements are all only Ethereum. Other relevant info is he's exchanged a lot to other coins that have flopped, and lost half on a scam so I know it's not all Ethereum anymore. Can anyone help me decipher why the discrepancy between the two and help me here? I'm not on speaking terms with him right now and I am doing everything I can to prepare for when I do.

Here is a comparison of how the coinbase statement transaction activity looks vs the transactions that appear on the blockchain site:

Coinbase Statement Transactions: (2017 PDF download) 70 Eth Purchase 14 Eth Purchase 30 Eth Purchase 5 Eth Sent 84 Eth Sent 15 Eth Sent 15 Eth Sent

Blockchain Transactions (Currently showing when I look up my wallet address) 4.99 Eth Sent 0.01 Eth Sent 4.99 Eth Received 0.01 Eth Received