The newest iPad Pro is a tablet with a much thinner chassis than its predecessor. However, this is because it no longer has a headphone jack. The iPad Pro 2018 also has USB type C, for improved transfer speeds and maybe more. Hopefully, this will be worth living that dongle life.
https://www.notebookcheck.net/The-2018-iPad-Pro-loses-the-headphone-jack-but-gains-USB-C.354131.0.html
Someone should make a phone / tablet with x2 USB-C ports AND an audio jack. Or better yet, make everything a double like microSD, SIM, 3.5mm jack, speakers, microphone, etc because why not? Then this insanity might just end. Hopefully Samsung gets to do it since it's the only manufacturer with sense these days.