In Jain dharma, among the 84 lakh jīvayoni, the most numerous and prevalent in this world are generally:

1. Ekendriya jīvas — one-sensed beings

- Vanaspati (plant-bodied beings) are especially abundant. - Prithvikāya, Apkāya, Teukāya, Vāyukāya are also included here.

1. Sūkṣma jīvas — subtle, microscopic beings

- These are believed to be in extremely large numbers.

1. Among mobile beings (tras jīvas), insects, worms, birds, and animals are far more numerous than humans.

So, if you ask which jīvayoni are most prominent in this world, the answer is:

• First: one-sensed beings, especially plants and subtle life
• Among visible moving beings: insects and small animals
• Most rare but spiritually important: human beings

In Jain view, human birth is rare and precious, because it is the best opportunity for dharma, संयम, and moksha-mārga.