Where to scatter a small stream of pictures, do you need a structure and a preview?

Question

Telegram

Good afternoon!
The telegram channel receives the same type of messages with links to the picture and accompanying text (example below).
It is necessary - to manually distribute them into a 2-3-level catalog (Currencies - EURUSD, GBPUSD; Metals - gold, palladium, etc.), in the guya of the catalog, a preview of the picture is required (so as not to open the link every time, but simply click on the small picture and a window appeared with a large one) a la telegram or discord. The software must be on the web, it is desirable to have an application for android, Win.
Please tell me similar software - I already thought about discord, but I'm not sure that it can do nested channels.