It is difficult to identify which profile has been used when the role ARNs have ugly names

[jnawk]

When the role to assume has been created by CloudFormation, and when the same template has been used in multiple accounts, the role name ends up looking the same, safe for the string of garbage at the end.

The AWS Console will identify the role & account like so:
{roleName}/{sessionName} @ {accountName}

The account name is up to the account, so only the sessionName is available to customize the string.