The S-1 is a bit opaque as it doesn't list out Class B ownership in the table. Lyft class B's are convertible to Class A at any time. If you follow to the table footnote for Green's entry you'll see:
"Consists of (i) 4,663,809 shares of Class B common stock held by El Trust dated August 3, 2015, for which Mr. Green serves as trustee, (ii) 675,564 shares of Class B common stock held by The Green 2014 Irrevocable Trust dated June 12, 2014, for which Mr. Zimmer serves as trustee, (iii) 360,979 shares of Class B common stock held by The Logan Green 2016 Annuity Trust, for which Mr. Green serves as trustee, (iv) 360,979 shares of Class B common stock held by The Eva Green 2016 Annuity Trust, for which Mr. Green’s spouse serves as trustee, (v) shares of Class B common stock issued pursuant to the Founder Option Net Exercises and (vi) 1,180,329 shares of Class A common stock underlying RSUs for which the time-based vesting condition would be satisfied within 60 days of December 31, 2018 and assuming the satisfaction of the performance-based vesting condition. Subsequent to December 31, 2018, a portion of the shares described in this footnote were transferred between the trusts described in this footnote for estate planning purposes."
"Consists of (i) 4,663,809 shares of Class B common stock held by El Trust dated August 3, 2015, for which Mr. Green serves as trustee, (ii) 675,564 shares of Class B common stock held by The Green 2014 Irrevocable Trust dated June 12, 2014, for which Mr. Zimmer serves as trustee, (iii) 360,979 shares of Class B common stock held by The Logan Green 2016 Annuity Trust, for which Mr. Green serves as trustee, (iv) 360,979 shares of Class B common stock held by The Eva Green 2016 Annuity Trust, for which Mr. Green’s spouse serves as trustee, (v) shares of Class B common stock issued pursuant to the Founder Option Net Exercises and (vi) 1,180,329 shares of Class A common stock underlying RSUs for which the time-based vesting condition would be satisfied within 60 days of December 31, 2018 and assuming the satisfaction of the performance-based vesting condition. Subsequent to December 31, 2018, a portion of the shares described in this footnote were transferred between the trusts described in this footnote for estate planning purposes."