Emulator currently is banned for the original Jak 2 leaderboards, however if you are looking to play on keyboard/mouse, you are able to do so with OpenGOAL. It is the recommended way to play Jak 1 and 2 on PC due to it being more accurate and having more quality-of-life, as well as being open-source. Most recently, Jak 2 has beta support and is able to be played directly through the launcher.
Runs on Jak 2 OpenGOAL can be found here, and keyboard/mouse along with any controller of your choosing is allowed for run submission.
This run looks spliced in my honest opinion. Could the moderators please look into this run a little bit more?
Steam Deck runs the Steam version of the game, therefore it would be PC for now. However I'm not actually sure if Sonic Frontiers has its own "build" specific to Steam Deck or if its a compatibility layer, please let me know so I can add SteamDeck as on option.
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I want to submit my casual playthrough please where are the boards!!!! graaaaaah