I've been a long time Samsung phone user, since the Note 2, and really like using Wireless Charging. I find it very convenient. I also really like the Apple Magsafe solution because it solves the retention problem inherent with wireless charging, especially in a car environment. However as some of you know Magsafe chargers often will not give you full 15W Fast Wireless charging and thus charge Samsung devices more slowly, and it's quite difficult to figure out which ones work and which ones don't. Also the magnetic retention varies a lot, and you have to find a case that has a nice magsafe receiver built in that, at least with spen phones, won't interfere with the spen usage. So with my recent S24 Ultra purchase I decided to try to figure out some Magsafe solutions that gave me full 15W Fast Wireless charging, hold the phone well, and don't interfere with the spen. Here's what I found that are working quite well for me:

Phone case: Sheheme Titanium Clear S24 Case

I like a really slim clear TPU case. I bought I think 5 total "slim" cases and of those five the issues I had were:

• too bulky, some had some thicker corner bumpers or sides that I didn't really see in the website pics

• Magsafe retention wasn't lined up properly with the wireless charging coils. Obviously this isn't ideal as it could lead to heat up and weak charging, if it works at all.

• didn't have all sensor holes exposed (most didn't have the one hole next to the USB-C port uncovered).

• The bottom speaker was not fully exposed, but instead covered by a "grill" with lots of holes. As I want max sound output available to me I preferred those cases with the speaker hole for the case completely open.

The two negatives about the Sheheme case are that it comes with plastic covers for the camera lenses (but I was able to just push those out as I didn't want them interfering with camera optics), and in the bottom right is a bump-out for a lanyard which actually is uncomfortable for me as that's about where my ring finger is when holding the phone. These actually were common on a few of the cases I tried.
Otherwise this case is great with relatively strong retention, proper magsafe alignment, good fitment, and pretty thin yet still with ridges to protect the script and cameras. I also verified that with this case on I can still get Fast Wireless charging without any heat up in the case with my official Samsung 15W charging stand here https://www.samsung.com/us/mobile/mobile-accessories/phones/wireless-charger-stand-15w-black-ep-n5200tbegus/

Stand Charger: GAGBK Fast Wireless Magsafe Stand Charger - aesthetically I'm not sure it's the best looking, but of the handful of stand chargers I tried this was the only one for me that actually gave me Fast Wireless Charging on the phone. Has buds and watch charging as well, but I didn't try those simultaneously yet as I can't find my watch and my buds haven't arrived yet. I really wanted an Anker Qi2 charger to work (since I figure future Samsung phones will support Qi2) but it didn't give me Fast Wireless charging unfortunately.

Car Chargers:

Goplum Magsafe Car Charger - this one has the strongest, anecdotally, retention of the three here, and it doesn't seem to get warm over longer periods of charging like some other chargers. Requires a power source.

ESR for Magsafe Car Charger - this was to me was the nicest looking but it has slightly weaker retention and actually got a little warm with use. I wasn't convince the warmth was necessarily an issue but as the Goplum had slightly better retention and did not get warm, figured I'd go with that.

MANKIW Magsafe Car Charger - Almost went with this one because it didn't get warm and looked pretty good, better than the Goplum, but I noticed it had the weakest retention (again, judging by my personal feeling, nothing very scientific).

Baseus 160W USB C Car Charger - this is the 12V adapter I had already purchased for use in my car. When connected to the first USB-C port directly I get Superfast Charging 2.0 with the phone, which is the fastest you can get. When connecting that cable to all three of the above chargers they all are able to get Fast Wireless Charging with my case on the S24 Ultra.

I hope that helps those of you looking for Magsafe options. I found information on this topic hard to come by and thought best share my little bit of info in case it's useful. I have no affiliation with any of these companies or products.