I think
Uijtdebroeks is a talent than can be compared to Brenner in the way he wins the races. I mean, last year, Uijtdebroeks destroyed everyone on many races. 10' advantage over the 2nd, solo breakways over 60kms, outshined the whole peloton on the Grand Colombier (Tour de l'Ain cadets) etc.. After his 2nd place on 2018, last year he won the Young European Criterium. 4' advantage over the 2nd on the stage two. During their years in cadet category, Uijtdebroeks is the sole rider can be rivalise with the German rider. Uijtdebroeks finished 2nd on the Young European Criterium '18 just behind Brenner like I said just few previous lines.
I see you are talking about
Carlos Rodríguez. I always had the impression that it was "sold" a little too much. First, he was at Kometa (Fundación Contador) in 2018 & 2019 with cyclists like Álex Martín (2000), Raúl García, Javier Serrano and Fernando Tercero, all three 2001. Obviously, Rodríguez is one of the best juniors that Spain has known for a decade probably (for me, the last is Jésus Herrada). But he benefited from the total domination of Kometa in 2018 and 2019 with his teammates :
- Álex Martín won the Vuelta a Besaya '18. A very strong climber. Future stage racer for Spain.
- Raúl García is like a little Valverde. A very versatile rider. Great climber, great time trialist, great sprinter. He win la Copa de España '19.
- Javier Serrano is the Gonzalo Serrano's brother. Very great puncher. He already had the level of the Sub23 last year.
- Fernando Tercero, one of the 2/3 greatest Spanish pure climbers born in 2001.
The only thing I can really confirm is his total superiority (flat or cronoescalada) on the various time trials in Spain. He largely dominated Ayuso, Arieta, García in 2019 and Ivan Cobo in 2018.
Juan Ayuso is with Bathco, a small team from Cantabria. He doesn't have many greats teammates to help him. Only a few Colombians. Bathco has always recruited a few Colombians to ran 2/3 months during the year. Well, he manages all the time alone. With the Spanish selection, I even found him superior to Rodríguez in 2019. I find it difficult to estimate his true level because the U23 & U19 Spain's level has always been relatively low. I don't know if his level can be similar to Brenner.
Keep an eye on the Navarrese / Basque
Igor Arrieta (2002), son of José Luis Arrieta. He is like the Juan Ayuso from the Basque Country. Great talent for Spain. Twice 2nd at the Spanish championships last year. Many victories in Euskadi like the Gipuzkoa Itzulia 2019.
Jefferson Ruiz (2002) is from Boyaca. He comes out of nowhere by winning the Vuelta del Porvenir. Almost no results before his victory on the queen stage. On the queen stage of the Clasica de Soacha, a great race for the juniors, he finished at 7 'from the Ecuadorian Bryan Obando and Germán Gómez. He won a little race before the Vuelta del Porvenir but the level was rather low.
Well, we will be able to see what he can do in Europe if he comes to Italy.
Aside from German Gomez, the real "big thing" in South America is the young Ecuadorian climber
Bryan Obando (2001). He is the winner of la Vuelta al Ecuador U19 in 2018 and 2019 (with 10 'lead over the 2nd). He ran a few times in Colombia and beat the best Colombians on the mountain stages (winning the jerseys of the best climber each time), especially on La Clasica de Soacha. Today, he is the only Ecuadorian, with Richard Huera, to be on a Colombian team. Onion Team for Obando. Avinal for Huera.