Interviewing with FAANG company but received an offer for non-FAANG company

As the title suggests, I am currently interviewing for two roles at FAANG companies but received an employment offer for a non-FAANG company. I am excited about the role but the preference would be a FAANG company. How should I go about this? Should I delay starting the non-FAANG role to continue with interviews? Do I let the FAANG roles know that I have received a job offer to help speed up the process???