Maybe as we get better at decoding DNA we’ll find leftover scraps of some of them lurking in the seemingly-unused sections of various genomes.
Coincidentally, Quanta has an article on a modification of RNA World hypothesis arguing something similar: https://www.quantamagazine.org/lifes-first-peptides-may-have-grown-on-rna-20220524/
Coincidentally, Quanta has an article on a modification of RNA World hypothesis arguing something similar: https://www.quantamagazine.org/lifes-first-peptides-may-have-grown-on-rna-20220524/