Who are the three categories of people who will enter Paradise on the Day of Resurrection, "gathered as a bird gathers sesame seeds"?

The hadiths mention three categories who will be the first to enter Paradise: "Those who praise Allah in every circumstance," "Those whose sides forsake their beds (for prayer)," and "Those whom neither trade nor selling distracts from the remembrance of Allah."

And three categories who will be the first to enter Hellfire are: "Every arrogant tyrant," "Whoever harms Allah and His Messenger," and "Makers of images."

Furthermore, three categories will be the first to be fueled into the Hellfire on the Day of Resurrection: "A man who memorized the Qur'an" but intended to gain fame thereby, "A man who was killed in the cause of Allah" but wanted it to be said of him that he was "brave," and "A man of abundant wealth" but wanted it to be said of him that he was "generous."