I don’t think the comparison is fair. Some of the products presented here are named copilot themselves, or at least for some, copilot + the domain of the base product. It’s not just a functionality like saving.

Which can get even messier in people’s head, since they will usually reference any product they use as to copilote, when they may be talking about different ones sometimes.

For instance, my friends who uses teams or the 365 suit refer to copilot as the integrated AI tool within these softwares. When, as a SWE, where I hear about copilot, it usually refers to the coding assistant/AI code completion/agent tools for me.