I think IGDB should borrow the "All DLC page" from Steam.

So, on a page that has lots of DLC, say

Snowrunner - https://www.igdb.com/games/snowrunner (12 DLC)
or
Euro Truck Sim 2 - https://www.igdb.com/games/euro-truck-simulator-2 (11 DLC)

A page should be added say https://www.igdb.com/games/euro-truck-simulator-2/dlc

Which has a layout simial to https://store.steampowered.com/dlc/1465360/SnowRunner/#browse

So a vertical list of all the DLC's with the box art and the summary (maybe the website links along side)

Then you can more easily see all the DLC without having to use the arrows to navigate the list.

This can also help karma hunters to easily revise/update data on DLCS