The "15" in the name typically refers to version 15.0 of the patcher, which corresponds to compatibility with Adobe CC 2015, 2017, 2018, and early 2019 releases. However, many third-party repackagers have retrofitted the patcher to work with newer versions up to 2023.
The era of the amtlib.dll patch effectively ended with the transition to modern cloud infrastructure. Adobe moved away from isolated desktop serial-number checks and fully embraced a service-driven, identity-based subscription model. universal adobe patcher 15 with update management tool
If you are looking for workarounds due to the cost of Adobe subscriptions, there are many powerful, high-quality alternatives available that do not require patching: Use Adobe Remote Update Manager The "15" in the name typically refers to version 15
Use the Adobe Creative Cloud Cleaner Tool (official from Adobe) to remove all traces of cracked installs. Do not just drag to the trash. Adobe moved away from isolated desktop serial-number checks