[Samsung Galaxy A52s 5G] sanderbos:
[Heavily edited a day later, to make this more into a mini howto/ review.]

MGC 8.4 on A52s:

MGC 8.4 can be downloaded from celsoazevedo (I pick MGC.8.4.600.A10.V11 specifically, because e.g. in V13 they require you to change the Session ID in more places, plus I have only tested V11).

You can select any package name you want on A52s. This allows you to pick a package name that is not installed on your phone yet, so you can install multiple gcams next to each other. E.g. if you already have a gcam with the ruler package name instaled, you can pick the snap package name.

There is an option to load config files, but since the MGC 8.4 line has many fewer settings it is not really necessary to load one.

Settings to Change:

Here are the settings you should consider changing:

Only must: On A52s you have to go to Settings|Photo mode session config|Session ID|61448 to stop the freezing of the viewfinder.

(which is actually great, only this one setting and the freezing is fixed)

Settings|Photoresolution camera should be set to 'Max resolution', otherwise you get only 12MP instead of 16MP images in 4:3 mode.

Since the horizon leveling does not really work you can remove that by disabling Settings|Hints for framing.

You may want to disable top shot (3rd option from the dropdown settings in the viewfinder), although it does actually work. I will say a bit more about this under here.

You may want to enable Settings|Advanced|HDR+ option to get the HDR+ enhanced option in the viewfinder dropdown (this is just about adding that extra option)

What I also really like about GCam is it's ability to track focus, Settings|Advanced|Focus tracking in Photo/ Video mode

(Okay, since it is now a list of 6 settings I attached a config with just those settings to make life easier, load attached xml from Settings|Configs (bottom of list)|Load)

A note on image quality settings:

MGC 8.4 lacks many of the image quality settings that MGC 8.1 has. I took some pictures and out of the box the quality is really good, very comparable to the MGC 8.1 settings that I use (that are near default), not as good as a properly configured LMC GCam variant.

One of the only custom quality options that is present is Settings|Photo mode session config|Merge so I thought I would do a comparison of those merge modes. But I hardly could spot any difference between them, so little in fact that I wondered whether it was really doing anything with that setting. Maybe the Spatial RGB mode made Ultrawide HDR+ Enhanced a little better, but that could be my imagination.

A note on top shot:

I did not even know that top shot worked now, I always disabled it immediately. But it actually works now (also in MGC 8.1, so it is not unique to MGC 8.4). So I actually played quite a bit with it. What it does is that it stores a number of extra images just before and after the picture you actually take. This allows you to select the best moment afterwards (in the swipe up menu from e.g. Google Photos), which is handy if you take a photo of an action scene with moving kids or animals. It does make the jpeg much larger because it has all these extra images in it, and google photos will show the photo as animation by default which I find annoying, but those are the only downsides to getting the extra images. I attached a sample with a quality comparison of the different frames. And the quality is really not that bad if you just want to share on whatsapp and don't intend to crop further, but only in that situation.