When they become legends, then of course they will always be remembered but indeed, the fame factor will be the difference. After all, Real Madrid also has many legends in the past but what happens now, because they do not have high fame like Ronaldo, then their names also slowly fade. But of course, their names will always be there at Real Madrid, say for example Raul Gonzalez and maybe Iker Casillas who are basically legends. In fact, they are not only legends,because during their careers at Real Madrid they were also captains of the team, but now their names may not be discussed much anymore although they will not be forgotten.
Almost most Real Madrid players have a much greater level of success, besides their names being so famous, they also have an impact on the club with the titles they have won. Ronaldo is so talked about in modern football like today and is always associated with Messi's success so it is natural that his name becomes one of the most popular in Real Madrid because there is such a big competition between the two.
There are many legends in Real Madrid because this club has so many achievements that have been achieved by players in different generations. Toni Kroos and Luka Modric will follow in the footsteps of players who are part of Real Madrid's legend and both have contributed so much to Real Madrid that it is only right that they are considered legends.