as in the question I wonder whether MC Corporate License include FTP and SFTP? From this link is not very clear. Is there an official comparison page between the different licences? Thanks
Yes, each Marketing Cloud BU comes with an "enhanced" (s)FTP connected to it. Most of my client have corporate editions, we use sFTP for all of them - without that, SFMC would have a rather large feature gap.
Have not seen an edition below corporate in the flesh, and this documentation says "contact your representative": https://help.salesforce.com/s/articleView?id=sf.mc_es_enhanced_ftp_guide.htm&type=5
...but from experience - corporate and above, definite yes.
And to reiterate: I would also be very surprised if lower editions didn't have it.