AMI not available with M6i/R6i, but available with M5/C6i

Question

I've found the AMI, Amazon provided, is not available with M6i/R6i, but available with M5/C6i.
ami-09b781df816feb92d (at ap-northeast-1)

I believe M6i/R6i have compatible architecture with C6i.
Is this just some issue forgetting to attach some compatibility flag?
As a workaround, I've launched with M5, and changed instance type to M6i. It looks working.

Answer

It is quite strange, it DOES supports M6id, according to Marketplace statement.
And it also supports M5/C6i, so this AMI does not require any ephemeral storage....
So it seems there should not be any technical reason, not to support M6i....

Answer

Indeed, even in my environment, I could not select M6i at first startup.  
The following documents seem to support M6i.  
https://aws.amazon.com/marketplace/pp/prodview-q6d4utevggvnk?sr=0-1&ref_=beagle&applicationId=AWS-EC2-Console#pdp-overview

If there is no error when starting with AWS CLI, etc., it could be a bug in the management console, etc.

It may be a good idea to check the driver version using the method in the following document, just to be sure.  
https://repost.aws/knowledge-center/migrate-to-gen6-ec2-instance

AMI not available with M6i/R6i, but available with M5/C6i

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