You already know what a manvantara is. The titles of the seven great sages (saptarshi), the names of the gods and the title of Indra change from the manvantara to another.
In the present kalpa (cycle), six manvantaras have passed. The first Manu was Svayambhuva.
The second Manu was Svarochisha. The gods then were the paravatas and tushitas and the title of Indra was held by Vipashchita. The seven great sages were Urjja, Stamba, prana, Dambholi, Vrishabha, Timira and Arvarivana.
Uttama was the third Manu. The gods of this manvantara were the sudhamas, stayas, shivas, pratardanas and vashavartis and the name of the Indra was Sushanti. Rajah, Gotra, Urddhavahu, Savana, Anagha, Sutapa and Shukra were the seven great sages.
The fourth Manu was Tamasa. The gods of this era were the suravas, haris, satyas and sudhas and the title of Indra was held by Shibi. The seven great sages were Jyotirdhama, Prithu, Kavya, Chaitra, Agni, Varuna and Pivara.
In the fifth manvantara, the Manu was Raivata and the title of Indra was held by Vibhu. The gods were the bhutis and the vaikunthas and the seven great sages were Hiranyaroma, VedaSri, Urddhavahu, Vedavahu, Suvahu and Suparjanya. (The name of the seventh great sage is missing.)
The Manus Svarochisha, Uttama, Tamasa and Raivata were all descended from Svayambhuva
The sixth Manu was Chakshusha and the Indra then was Manojava. The gods were known as the adyas, prasutas, bhaVyasa, prithukas and lekhas. Sumedha, Vrija, Havishmana, Uttama, Madhu, Abhimana and Sahishnu were the seven great sages.
The seventh manvantara is the one that is now current and the Indra now is Purundara. The Manu is Shradhadeva, the gods are the adityas, the vasus, the rudras and the maruts. The names of the seven great sages are Vashishtha, Kashyapa, Atri, Jamadagni, Goutama, Vishvamitra and Bharadvaja.
In the present kalpa, there will be seven more manvantaras in the future. Thereafter, the world will be destroyed.
(It should be mentioned that the names given in this section do not necessarily tally with the names given in the other Puranas. Not only do the names of the gods, the sages and the Indras differ, the names of the future manvantaras also sometimes differ from Purana to Purana.)