„

„

“

Low quotation mark for cross-linguistic compatibility, I still see you oh so infrequently
Used occasionally for extra flare in stylized quotes every here and there
Rarely used in English text, and optional in some of the rest

Certainly a sight to see, it's double comma inverted apostrophe.

,, ’

Its only version is curly, so the high quote must be accordingly

„ ... "×         „ ... “

Called “LOW-9” due to its shape; on the ground ’cause it showed up late

„ ₉₉

Included early in ANSI, and with its own longer legacy

	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
8x	€		‚	ƒ	„	…	†	‡	ˆ	‰	Š	‹	Œ		Ž
9x		‘	’	“	”	•	–	—	˜	™	š	›	œ		ž	Ÿ
Ax		¡	¢	£	¤	¥	¦	§	¨	©	ª	«	¬	­	®	¯
Bx	°	±	²	³	´	µ	¶	·	¸	¹	º	»	¼	½	¾	¿
Cx	À	Á	Â	Ã	Ä	Å	Æ	Ç	È	É	Ê	Ë	Ì	Í	Î	Ï
Dx	Ð	Ñ	Ò	Ó	Ô	Õ	Ö	×	Ø	Ù	Ú	Û	Ü	Ý	Þ	ß
Ex	à	á	â	ã	ä	å	æ	ç	è	é	ê	ë	ì	í	î	ï
Fx	ð	ñ	ò	ó	ô	õ	ö	÷	ø	ù	ú	û	ü	ý	þ	ÿ

Anything more we'll have to see
It's Unicode U+201E.