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MT28EW512ABA1HJS-0SIT - The closest recommended replacement for this device is S29GL512Tx family of devices. You can go through this Migration guide - https://www.cypress.com/file/456371/download, where all the features of the two devices have been compared.
MT28EW128ABA1HJS-0SIT - The closest recommended replacement for this one would be S29GL128Sx family of devices. The command set is compatible.
MT29F8G08ABACAWP-IT:C - The closest recommended replacement is S34ML08G2x family of devices. S34ML08G2 is a dual die stack of two S34ML04G2 die. You can refer to the following application note for feature comparison - https://www.cypress.com/file/197966/download. Though the App Note is for S34ML-1 devices, it can be used for S34ML-2 devices also.
MX29GL512GUT2I-11G - The closest recommended replacement for this device is S29GL512T11TFIV10.
MX29GL128EHT2I-90G - The closest recommended replacement for this device is S29GL128S90TFI010.
Please let me know if you have any further queries.