When you downloaded Lion from the Mac App Store (back when it was $29.99), you received an app file called Install Mac OS X Lion.app. Inside that app bundle (Right-click > Show Package Contents), nestled in the Contents/SharedSupport/ folder, you find the holy grail: InstallESD.dmg .
This is not a simple drag-and-drop file. It is a bootable, encrypted, read-only disk image that contains the entire recovery system and the base system files for Lion. If you have this file, you own the ability to install Lion on any compatible Intel Mac, regardless of internet recovery status. mac lion os x 10.7 - installesd.dmg download
If you manage to obtain the installesd.dmg or a similar installer package, you can create a bootable USB drive with it. However, if you only have access to a newer version of macOS, you might need to use different commands to create a bootable installer. When you downloaded Lion from the Mac App
Here's an example command for creating a bootable installer on a newer macOS (if you have the original Lion installer): Replace /Volumes/MyVolume with the path to your USB drive
sudo /Applications/Install\ OS\ X\ Lion.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ Lion.app
Replace /Volumes/MyVolume with the path to your USB drive.
If you find a file, verify its integrity using md5 or shasum in Terminal.
MD5: 2b75aab30b9f2f6c3fc4385621eef027
SHA-1: a44c883f9a92aae6a87d24d4a2363fded674a2a6
File Size: Exactly 4,194,044,261 bytes (4.0 GB on disk)