According to book of Numbers the festivals, etc. were described and commanded by God.
“Also, a number of things on your list (without tracking down Newman’s footnoted source, I can’t tell to what extent he was paraphrasing from his source or writing his own opinion) came into the Church directly from Judaism:...”
To take just one example from the above says The Catholic Encyclopedia:
“We need not shrink from admitting that candles, like incense and lustral water, were commonly employed in pagan worship and in the rites paid to the dead. But the Church from a very early period took them into her service, just as she adopted many other things indifferent in themselves, which seemed proper to enhance the splendour of religious ceremonial.”
Unless the Encyclopedia is calling Judaism “pagan” then, no, these practices and such did not come from Judaism.
Catholicism is not Judaism with a Latin accent.
Yes, I know. But did God get the idea of festivals from the pagans, who had them previously? OK, snarky question, but you could say that God sanctified the idea of festivals to Himself (much as, through His Church, He sanctified other things); oddly, a couple of the Jewish festivals correspond with the dates of the wheat harvest and the barley harvest, which assuredly were celebrated first. And the pagans still had festivals before the sanctified festivals of the OT.
And if the Jews didn't have candles, they used "candlesticks" and oil lamps, and they certainly used incense in Temple worship. The Catholic Encyclopedia is just giving a cursory overview -- you can't pretend to believe that brief article is an exhaustive scholarly investigation.
Catholicism is not Judaism with a Latin accent.
No, it's not, but there's a surprising number of correspondences.