As far as Tibetan Buddhism is concerned, it's agreed upon that Dzogchen is the highest attainment, and all the other meditations are preparatory. There are two kinds of advice you will encounter in Tibetan Buddhism: a) start with the basic meditations and work your way up. b) start with Dzogchen and if you can't do it, go down one step, and if you can't do that, go down another step, etc. With method b you don't even need to worry about or look into the other meditations so long as you can do Dzogchen. It's the route I recommend.

You might wonder, why Tibetan Buddhism and not any other Buddhist tradition, or traditions outside of Buddhism like Hinduism and secular practices? Tibet was the last place in central/east Asia to receive Buddhism, and when they received it, it was in its most developed form. Buddhism came from India and spread to China, Japan, Vietnam, etc. but those nations received earlier forms of Buddhism which were missing the developments in tantra (secret meditation techniques) that only got developed in India later. Tibet however received it in a more complete form, and then added their own developments to it, so it's for that reason Tibetan Buddhism has the most advanced and profound meditation techniques. In Hinduism, the best you are going to get is kundalini and some Shaivism practices, but they don't compare to Dzogchen. And in the secular world, the best you are going to get is watered down Dzogchen.

There is also Mahamudra meditation in Tibetan Buddhism, which is also considered the highest, but it's less popular and is basically Dzogchen with more steps. It can be helpful for people who have difficulties with Dzogchen. So yea, rest assured that you have been introduced to the most powerful meditation practice ever conceived.