90s - Orlando Rodrigues (my first hero), Cândido Barbosa ("Foguete da Rebordosa" - Our national Peter Sagan)
I just started to follow cycling regularly (international) in 2000 so these are my all time favorites (I will not put riders I "just liked")
GC riders:
Armstrong - a rider with his story, winning 7 Tours, the perfect fairytale. I still remember playing PCM in "US Pistol with Lance Nilstrong". Good old days.
Contador - The great one is probably the rider I loved the most. For me, he showed what is pure ciclismo (in GTs), I was used to cheering for a robotic team like US Postal with Lance and after a horrible 2006 (Lance retired. Operacion Puerto, etc), I had a glimpse of hope and life when Contador came to the spotlight in that Paris Nice 2007. Such a thrilling and exciting rider, who can't remember his fight against Rasmussen? Probably the best fight I ever seen in cycling. With Contador, I also lived my lowest moment as a cycling fan (even more than Armstrong's confession) when he lost the Tour in 2014.
Pogacar - just like Contador, he is agressive and he doesn't ride defensively. He is by far the greatest rider I ever seen and by a huge margin. As a rider he is everything I like as fan even if he is somewhat too good which leads to boring racing most of the time.
Classicomanos:
Bettini - for me, he represents the "old italian mafia" (Bartoli, Di Luca, Rebellin, Ricco, Cunego, Savoldelli, Simoni, etc) and "pure ciclismo". I enjoyed those italian riders, they were bold, they were crazy, they were pure racers and Bettini was all of this. Very attacking mindset, good sprint, very smart. Unfortunately he stole us a gold medal in Athens.
He also reminds me the World Cup and its jersey I simply loved. I miss to see him in that jersey.
Boonen - My favorite cobbled classics rider of all times. Loved to see how he used to ride on the cobbles. Only MVP matches him.
Gilbert - Biggest puncheur I ever seen (after Tadej). No one comes close to his level when he was in peak shape. Those vicious accelerations on Cauberg were something else. He was also a pure racer, able to contest any classic. A shame he broke his rib on AGR (he still won) after winning RVV. There is also his BMC years where he chose money and probably wasn't training a lot. He wasted 3 or 4 years there.
Sagan - A showman, such a huge character, so much panache on the bike. His palmares doesn't feel right when you look to his level and ability.
Sprinter:
Cav - The only sprinter I fall in love (SuperMario was likeable too). Huge personality, huge ability on the bike, I never saw a sprinter so crazy like Mark, he was 10 cm smaller than everyone and still bullied his rivals. His acceleration was remarkable. Probably the most enjoyable rider in interviews.