Let me point to some problems.
Take buddha-remembrance (nianfo/nenbutsu) as an example.
The Amitayurdhyana Sutra (aka Visualisation Sutra) describes 13 methods. They are visualisations of various objects. But the tradition knows several other objects one could visualise, and the visualisation can be combined with different postures and movements. These are practices related to the Amitabha. Also, in the Pure Land tradition of East Asia the most common understanding of buddha-remembrance is not a visualisation practice but the recitation of the name. Reciting the name also has many forms and styles. Another factor is that not only those who consider themselves Pure Land practitioners use these practices but almost everyone. Also, Mahayana has several other buddhas, and they all have their own visualisations and recitations. That is, in the single category of buddha-remembrance there are numerous practices and interpretations of the practices. The single common feature is that they are all related to a specific buddha or bodhisattva. Just to complicate things, buddha-remembrance also means recalling the virtues of the Buddha (Shakyamuni), as it is used in Theravada, and it is more like an inspirational contemplation rather than a focused repetition or visualisation. Adding another factor, buddha-remembrance can also mean abiding in the buddha-mind, that is again not a typical meditation technique.
Thus, in this single term one can encompass so many things that talking about it as if it were a single method is being blind to the complexities that are actually there. That's why I asked if there is any definition of "meditation", because you can't really put all those methods into the categories of shamatha and vipashyana, and even specific traditions don't view all forms of buddha-remembrance as meditative practices.
If you want to follow traditional categories, you should look at the major meditation handbooks, like the Visuddhimagga, the Mohezhiguan and the Bhavanakrama. Theravada distinguishes samatha and vipassana, while Mahayana adds to this their combined practice (which doesn't mean that in actual practice it is not known in Theravada). If you want to encompass other meditation related practices, you can add to those three a fourth as preliminary practices conducive to meditation. Otherwise, as it shows in the current list posted previously, it won't be a list of meditation techniques but rather of various schools.
"If the Buddha-Nature is seen, there will be no seeing of a nature in any thing."
(Nirvana Sutra, T12n374p521b3; tr. Yamamoto)
"Neither cultivation nor seated meditation — this is the pure Chan of Tathagata."
(Mazu Daoyi, X1321p3b23; tr. Jinhua Jia)
"With sudden enlightenment to Tathagata Chan,
The six paramitas and myriad means are complete within that essence."
(Yongjia Xuanjue, T2014p395c14; tr. from "The Sword of Wisdom")