Musicians, do you put your stuff up on BandCamp, SoundCloud, both, and/or other?

I like SoundCloud, YouTube, and Jamendo. My favorite is Jamendo. It's where I find all my favorite indie artists. They have a system to help with the YouTube content ID system. AFAIK there are no upload limits.

Distrokid is the place to go if you want your stuff on streaming services. Very reasonably priced, and the service is a pleasure to use all around. I self publish all of my and Noise Job's stuff through there. https://distrokid.com/

I haven't done any "releases" but put finished stuff on Soundcloud just to share it with the world, sort of like a blog, and so people can grab it for free. You almost have to have a soundcloud to generate an audience. There's apparently a limit of 100 free downloads. Apparently Bandcamp only allows 200 for free, but I've also used archive.org to link to an unlimited free download (easier since I prefer CC over conventional copyright anyway).

If I start selling it, I'd use Bandcamp because it offers the best system I've seen for payment and redistribution in a manner that isn't DRM-encumbered. I've already got the account set up, it's just a matter of having stuff I want to sell.

I'm looking into it for my first EP, I would put it on bandcamp only but my collaborator would also like Spotify. We might go with distrokid because we have a cover and they have a service for that, but OneRPM could be an option too, they don't have a flat fee but take a % of your revenues, which I expect to be $0, so should be a good deal.

In Sir Curse we aim to get stuff released onto Bandcamp a little before it goes up on other streaming services. People can listen for free, and we tend to get a little bit of money from generous folks as well. Usually we put it up on Bandcamp about 2 weeks before it goes up on Spotify (though as others have pointed out, you should work out the date you want your music to be released and then upload minimum 4 weeks prior to that), to try to generate a little more revenue than we get from Spotify/streaming as a whole. I personally really like Bandcamp, you can sell merch through it as well as physical and digital copies of your music. They also waive their fees the first Friday of each month (at least for the duration of the pandemic) so more of your money goes into the artists' pockets. We've made a few hundred quid from it, just off the back of music and merch sales! Far better than the £20 that Spotify has brought us.

I don't really know much about Soundcloud, as I don't use it myself, or know anyone else that does. I don't think it's that popular of a service here in the UK. It's a good tool to have the tracks up somewhere that we can link to when sending songs out for review, or trying to book gigs and give a sample of our sound. They've also recently added some kind of royalties-sharing feature. I don't really know much about it, but I got a ton of emails from them recently, mentioning the service.

Mostly, you have to go where the audience is. For better or worse, the audience for Sir Curse is largely on Spotify, so we need to get our music on it. We use DistroKid to upload our music, because it's a flat, yearly fee to upload unlimited music. Now granted we've only got 3 singles out at the moment, but it feels like a very good deal, particularly with an EP on the horizon!

Everywhere possible! I started releasing on TuneCore, but as a few say above, DistroKid is better and cheaper for original music. I publish originals and covers on Soundcloud as a podcast. That way, people can subscribe and listen to stuff in their podcast app as I post it. I post a lot, and have at least 150 originals there now.
I just freshened my Bandcamp, and found you can use your own domain name in the free version, that's also a nice touch. Bandcamp automatically puts you whole collection for sale, which is a cool idea. I also publish jingles and such on AudioMicro as royaltyfree music. This has probably paid more cash than the others. In my experience, the most "action" comes from Apple Music/iTunes.

Looks like you have a great list already, but I'll offer a sort of off-the-beaten-path alternative viewpoint:

I don't aim to make money from my music (whether performances or songwriting). I don't care too much about trying to get hits/views/clickthroughs/likes. So, when I share stuff, it is either directly shared via a Nextcloud link to the client or target audience, or, if I expect slightly wider distribution, I put it (if it's a video) on Vimeo. I license almost all my stuff with Creative Commons licencing. I might make money occasionally via direct, custom labour on video or audio work for a client, but that's not the norm for my original creative work.

Philosophically, I just feel that my original, creative works should be free (libre), and not shackled, and that it makes more sense [for me] to put money in the bank account via non-artistic means. With this kind of freedom, and this kind of mindset, my art can be art for the sake of the art (and not necessarily for the sake of earning money, or fulfilling a contract).