I just mentioned Carmine Infantino in passing, and somewhere I read that he polled as the most loved penciller of the Silver Age, even over Jack Kirby. Perhaps because of his launch of the FLASH (first appearing in SHOWCASE) that defined the very beginning of the Silver Age in 1956. As well as his Adam Strange run in MYSTERY IN SPACE (1959-1964) and BATMAN run after that (1964-1968). Some of the most popular and definitive titles of the Silver Age.

I also became aware through the 52-page and 100-page issues of the early 1970's that Infantino was another artist who went back to the very beginning of comics, in Golden Age reprints of Flash, Black Canary, Johnny Thunder, plus other later reprints of crime stories, detective stories, science fiction stories and "Detective Chimp" stories up through the 1950's, and well as reprints of his Silver Age work.
It was something of a surprise that this prolific artist who largely defined the Siver Age also went all the way back to the Golden Age.

https://en.wikipedia.org/wiki/Carmine_Infantino

And that he started in comics when he was barely a teenager! This was a guy who was born to do comics.

Reading Infantino's Wikipedia profile also reveals that Frank Giacoia (one I associate most with being a 1960's/1970's Marvel inker) is another artist whose career spans back to the Golden Age.
https://en.wikipedia.org/wiki/Frank_Giacoia

And artist Joe Kubert as well started when Infantino did, also a very young teenager when he began drawing comics.
https://en.wikipedia.org/wiki/Joe_Kubert

All these artists, and Jack Kirby as well, are ones that when reading reprints of their work, I barely could connect they were the same guys who did the new work I was buying in the 1970's, the style of their work was so different than the previous decades. I think partly because they were laborer apprentices when they started out, and gradually became fully formed artists and grandmasters of the comics medium.

https://en.wikipedia.org/wiki/Jack_Kirby