Truth is that you almost can't go without a Discord account. There are so many communities that have a server there. All of them have a chatroom, and many of them a post promotion room, some host contests and a lot more.

As it happens, @jaynie published a post 2 days ago in which she asked people for their favorite Discord channels. If you go through the comments on that post, you'll find a lot of them. Check out what they are about, and join the ones your interested in.

Here is the link to the post:
https://steemit.com/steem/@jaynie/jaynie-1557430475077-share-your-steem-discord-communities