

List is incomplete. It seems to assume a relatively warm climate or expensive use of night-time home heating.
Thus: Long sleeves. Underwear under long trousers perhaps for sanitary purposes, but possibly for comfort.
There’s probably also a few people who have socks they wear to bed if not also blindfolds or old-timey nightcaps, but I get why those things aren’t in this graphic. Lack of long sleeves is more of a head-scratcher.
Knee-leeks and spear-leeks. Delicious.
Etymology time!
Knee-leeks is basically what onions were called before we adopted (or were made to adopt) a version the French word
the old English name for “spear” was “gar”*. “Garlic” is literally just a modern interpretation of “gar-leek”.
What about regular leeks? They’re just, well, leeks.
* Spear(wielding) Danes are mentioned as “Gardena” in the third word of the commonly seen image of the first page of Beowulf.