https://login.blockchain.com/#/recover work for 12 words standard phrases (when i put my mnemonic here site say Invalid passphrase)
https://login.blockchain.com/wallet/recover-wallet work for STANDARD legacy wallet recovery phrases (although they are longer but need be standard)
when i put my mnemonic here site say invalid checksum exactly because
my mnemonic words are not in the standard wordlist, which is used now to generate now the private keys
in 2014 for blockchain.info accounts was not necessay to have email attached, so i dont have any email attached to this accounts
+at that time they dont provided backup service to can download or request via email your wallet.dat
Lucius .. now is easy to say why i truted him in 2014, but if member with bitcoin from begin, from 2014 for sure remember at that time dont was other safe alternative for bitcoin WEB wallet
So what happens when you type your words in to this page? Do you get an error? What does the error say?
Do you have any of the old associated aes.json files? Do you still have access to the email account(s) which would have been associated with those wallets? Blockchain.info used to email out the aes.json files as back ups.