In short when you create your 256 bit generative number is created they will turn into the 24 or 12 words in your case you already did the generation so you just decode them to find the random numbers.
Which are two essentials to generate next step.
As from the step above there will be root key generated, this root key varies from wallet to wallet when created as deviation path can be different more or less but they most compatible In most wallets to be read .
Then next step will come which the extended public key which is generated from your root key and it’s children’s.
Xpub works for Bitcoin and Ethereum is nearly the SE but functions Abit different
Now given that explaination above we comes to conclusion to your issue:
first are the words created for Ethereum private key comes from the bip39 protocol list ?
Second as mentioned above most wallet have specific derivative paths or most are all commonly used does the one you used to build you 24 words inline with these paths to used in fx wallet
Most issues for paper based wallets are the derivatives paths. You can check MEW documents explains what I said above in more details.
And for fx core addresses they will have similar structure more or less so you will always need to check the derivatives paths and the main word list
Given all the above there is nothing centralized as everything is random and served to each own user uniquely.
This is just my comment based on my own perosnal knowledge @eduardstal @Richard can give definitely more precise answer