Ref. No. 41/
In the name of Allah the most Gracious the most Merciful
The answer to your question is as follows:
The detail regarding Hoor you mentioned in the question is correct. The Holy Quran says: the God-fearing will have great achievements, gardens and grapes, and buxom maidens of matching age. (Quran Surah No. 78, verse No. 31, 32, 33).
And in a hadith, the Messenger of Allah (saws) said that a martyr will have six blessings from Allah and one of them is that he will be married to seventy-two wives from hoor (beautiful and special girls of paradise).
See Faizul Qadeer 4/183, Hadith No. 4963
And Allah knows best
Darul Uloom Waqf Deoband