Got my MBP last week and have tried a few adapters with more on the way.
First up was a hub by Havit. It has 3 USB-A ports, 1 USB-c port, HDMI, and SD. Basically everything I need. Downside is it's silver not space gray (doesn't really matter) and the cable is too short based on the stand I use my MBP on. So it kind of dangles which I'm not entirely comfortable with.
https://www.amazon.com/gp/product/B01IHJVZ4U/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
Next were a pair of Nonda USB adapters. They're compact, space gray, and cheap. They look great and match the MBP perfectly in person. Downside is they're pretty fat so I can't use two next to each other which sort of defeats buying multiples. They also insert into the USB-C port kind of rough. Not smooth like other USB-C cables I have and that's more concerning to me.
https://www.amazon.com/gp/product/B015Z7XE0A/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
Since I didn't want to use all dongles I purchased this BC Master USB-C Lightning cable. Charges and data transfers without issue. Currently unavailable, but it was $10 when I bought it a few weeks ago.
https://www.amazon.com/gp/product/B01KO5NJ44/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
I ordered all of the above the same day I ordered the laptop. After it came in and I could actually try the stuff out I decided to order a few different things.
Rather than a hub for everything (mainly external drives), I decided to buy a few USB-B to USB-C cables. They should be here this week, but I'm hoping there aren't any issues. Having a cable that connects directly into my hard drive is ideal.
https://www.amazon.com/gp/product/B00Z5XFH82/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Next I decided to go with smaller USB-A to USB-c adapters. Believe these are slightly slimmer than the Nonda and might fit side by side. More importantly, I hope they fit in the ports smoother than the Nonda adapters. They might not look as slick, but whatever.
https://www.amazon.com/gp/product/B01EL4PVFE/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
To solve the SD card issue, I just picked up a dedicated reader. Plan to use one of the above adapters on this exclusively.
https://www.amazon.com/gp/product/B00OJ5WBUE/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1
Lastly, I picked up an Apple USB adapter just to try it and the fact it was only $9. In the end, I plan on keeping 2 USB-A to USB-C adapters, the USB-C lightning, and the USB-B to C cables. Shouldn't need any other adapters assuming these cables work. Fingers crossed.