I understood that already.
Technically TLC and QLC are both variants of MLC. Multi does not specify how many.
I just copied from a comparison sheet where Samsung compared the pro vs. Evo and called both MLC just with varying counts of layers.
Wikipedia states the same:
“in electronics, a multi-level cell (MLC) is a memory element capable of storing more than a single bit of information, compared to a single-level cell (SLC) which can store only one bit per memory element.
Triple-level cells (TLC) and quad-level cells(QLC) are versions of MLC memory, which can store 3 and 4 bits per cell, respectively. Note that due to the convention, the name "multi-level cell" is sometimes used specifically to refer to the "two-level cell", which is slightly )
sorry if I have been misleading