satoshi didn't creat blockchain, because blockchain was created 17 years before Bitcoin was born. and with name Time-stamp. time-stamp was created in 1991 by Stuart Haber and W. Scott Stornetta. but not adopted en masse. because it has a common problem of byzantium. and in 2008 satoshi solved this problem with alternative solutions. namely through proof-of-work created by Satoshi, then Bitcoin was born as a verification tool on the blockchain. so make no mistake. satoshi is not creator of the blockchain. but only perfecting time-stamps (now blockchain) that have common problems and solve them with bitcoin.
Neither did the ones you refer to in terms of time stamping. The Block Chain is nothing more than a linked list which developed way back in the mid 50s. Programmers use linked lists of things like structures, classes etc all the time and that's all the block chain is. The reason it's a "chain" though is because you can't remove items from the list without breaking it basically. Nor can you overwrite/change the items in the list and you can also validate each item to ensure it's supposed to be a link in the chain.
I'd also recommend you look over here as the Time Stamp is listed in the literature section associated with Satoshi as a reference etc.
https://nakamotoinstitute.org/literature/