What are some regular er and Ir verbs in Spanish?

Answer 1

Here are lists of about a dozen common regular -er and -ir verbs en español:

https://www.lawlessspanish.com/grammar/verbs/regular-er-verbs/

https://www.lawlessspanish.com/grammar/verbs/regular-ir-verbs/

If you want more comprehensive lists, try these:

http://www.intro2spanish.com/verbs/listas/master-er-regular.htm

http://www.intro2spanish.com/verbs/listas/master-ir-regular.htm

Answer 2

-er:

comer, beber, comprender, romper

-ir:

vivir, sentir, decir, recibir