seforim of the rebbe:
: Torat Menachem transcripts of talks in Hebrew, 1950–1975. (80 volumes)
: Torat Menachem Hitvaduyot – transcripts of talks in Hebrew, 1982–1992 (63 volumes)
: Reshimot – Schneerson’s personal journal discovered after his death. Includes notes for his public talks before 1950, letters to Jewish scholars, notes on the Tanya, and thoughts on a wide range of Jewish subjects penned between 1928 and 1950 (10 volumes)
: Likkutei Sichot – Schneerson’s discourses on the weekly Torah portions, Jewish Holidays, and other issues (40 volumes) – these are not included in torat menachem
: Igrot Kodesh – Schneerson’s Hebrew and Yiddish letters (33 volumes)
Haggadah Im Likkutei Ta’amim U’minhagim – The Haggadah with a commentary written by Schneerson
total 223 seforim. non of the above are adaptions, they are either he wrote himself – reshimos, igrot kodesh, heggadah, or others wrote down what he said by farbrengens – toras menachem, likutai sichos he said and after others wrote it up, he edited. same with maamarim melukat – 6 volumes – but its included in toras menachem
there are more seforim but they are adaptions i.e. Heichal Menachem – Shaarei – talks arranged by topic and holiday (34 volumes)
or sichos kodesh is the same as toras menachem just in yiddish (50 vol)
im not saying whoever gave more shiurim is a bigger gadol but 1) whatever other gedolim did, the rebbe did (in many areas much more) like 1000s of hours of teaching torah by farbrengens – 223 volumes!!.
kiruv everyone knows no one can compare to the rebbe.
today many many jews outside chabad learn the rebbes torah either directly or thrue rabbi yy jacobson, rabbi shais taub and many more. no other gadol’s techings are studied by som many jews (that lived after the war, obviously going back hundreds of yrs, there is gemarah rishonim, and gedolai achronim, sh”u