(a) The histogram plot of the first 30 target S-type planets with a₂ < 100 au in Kepler and N-body models. We utilized KDE to estimate the regional smoothed peak value of planetary masses. Left two lines represent the smoothed peak values of M_p,Kepler = 0.15 M_Jup (red) and M_p,N−body = 0.12 M_Jup (blue) for intermediate-mass planets with M_p < 1 M_Jup, the decreasing rate is 20%. The right blue and red dashed lines represent the smoothed regional peak values of M_p for Jovian planets with 1 M_Jup < M_p < 5 M_Jup, M_p,Kepler = 1.94 M_Jup (red) shifts slightly to M_p,N−body = 1.80 M_Jup (blue), with a decline rate of 7.2%. (b) The mass–orbital period distribution of 29 S-type planets in close-in binaries together with 11 transiting planets in wider binaries. Pink dots for the Keplerian masses and cyan dots for the N-body masses, gray dots in the background refer to the remaining single S-type planets.