This is arguably the most active and comprehensive electronics server on Discord. It is an extension of the famous EEVblog forum and YouTube channel.

: A focused server specifically for electronics and PCB design discussions.

Notice the difference? The good question includes:

: An industry-standard organization for professional designers. Their private Discord channel is used by members to discuss advanced technical questions, such as ESD rings on circular boards, power budgets, and industry-standard job definitions.

While not always "official" company servers, there are large user-groups for specific professional software.