You may want Rtings? They have detail methodology for each product category. For example, TV [1] If you open a random TV ([2]) and hover on the "(?)" buttons

You may want Rtings? They have detail methodology for each product category. For example, TV [1] If you open a random TV ([2]) and hover on the "(?)" buttons on the right, you can see the breakdown of each test, and if you click on each test it will give you the methods used. For example, input lag: [1] https://www.rtings.com/tv/tests/changelogs/1-11 https://www.rtings.com/tv/tests/changelogs/1-11 [2] https://www.rtings.com/tv/reviews/samsung/s90c-oled https://www.rtings.com/tv/reviews/samsung/s90c-oled [3] https://www.rtings.com/tv/tests/inputs/input-lag https://www.rtings.com/tv/tests/inputs/input-lag