What syag and avram (and myself) are saying is that there is an inordinate amount of chabad-centricism, much more than in other groups, wherein other gedolim are completely ignored and unheard-of.
Any satmar yingel can rattle off a list of rebbes who were not satmar, and they know there was a rav aharon kotler and a rav moshe feinstein. So can a bobover, or a litvishe, who can name many chasidishe rebbes. The only times (rarely) I’ve heard chabad speak about other rabbis, it’s only been about how they met the lubavitcher rebbe, or were related to chabad in some way. They also only mention rav Moshe, the satmar rov, rav chaim brisker (who some mistakenly call the brisker rov, a name used for his son rav yitzchok zeev) or rabbi yoshe ber Soloveitchik; I’ve never heard them mention the steipler, chazon ish, rav shlomo zalman, rav elyashiv, rav aharon kotler, or anyone else.