How would you do that not manually? Are tampermonky scripts self modifyable or do you have access to storage?
Try posting this in console and press l on a thumbnail. If you can modify your list, this should work.
if (document.querySelector('.game_cell')) document.addEventListener('keydown', event => { if (event.key != 'l') { return; } setTimeout(() => { var cell = null; var hovered = document.querySelector(':hover'); while (true) { if (!hovered) { return; } if (hovered.classList.contains('game_cell')) { cell = hovered; break; } hovered = hovered.querySelector(':hover'); } if (hovered) { console.log(hovered.querySelector('.game_title')?.textContent) console.log(hovered.querySelector('a')?.href) } }, 50); })