VoIP numbers are super cheap compared to non-VoIP, like 300-500% cheaper or even more.
And using non-VoIP numbers for google is the best method to OVERPAY when this is not necessary.
VoIP numbers have 100% success on google. Whatsapp is harder, but still not worth overpaying.
Non-VoIP numbers are good for services where you cannot use VoIP or have very low success rate with VoIP, but no other benefits from using them. There is no "more trust" or something from using non-VoIP when voIP are accepted too.