Lightsail is basically AWS' version of Heroku and App Engine.
(i.e. a PAAS)
I wish Google would also do this. Many times on GCP's website or at Google Next you try to decipher what the product is that they are talking about, then you realise "ah, it is their version of S3, CloudFormation etc". If they just had said that at the start...
Of course, no company will do this, unfortunately.
Lightsail is not comparable to Heroku or App Engine. Its comparable to Linode or Digital Ocean. Its not a PaaS; its a simplified VPS provider.
Heroku and App Engine operate at the application layer, with limited direct access to the underlying operating system.
Look for "Object Storange" for instance and in the row will be links to all the competing services, so you could pretty easily do this to learn about competitors through the one you know... At least for the big players.
As long as I know, aren't those types into Cloud Storage - nearline and coldline object storage types?