This is a little outdated as it's from last November but that means possibly even more are supported now.
Streaming devices
- Roku Premiere
- Roku Premiere+
- Roku Ultra
- Roku Ultra LT
- Roku Streaming Stick+
- Apple V 4K
- Chromecast Ultra
- NVIDIA Shield TV (2017 and 2019)
- NVIDIA Shield TV Pro
- Fire TV Stick 4K
- Fire TV Cube (1st and 2nd gen)
- Xiaomi Mi Box S
- Xbox One series
- Playstaton 4
- Sony 4K Android TVs
- Samsung 4K Tizen Smart TV (2016 or newer)
- LG 4K WebOS Smart TV (2016 or newer)
Source:https://www.androidcentral.com/which-devices-does-disney-plus-support-4k