First of all, I do not know what you mean by "similar to regular folks." Certainly, those of us living in Bricklyn consider ourselves regular and folks, just like humans are regular and folks. So, yes, we are similar to ourselves. But I assume you simply misspoke.

The citizens of Bricklyn, like all LEGO based individuals, are ABS-based, not DNA-based. We think; we feel; we have emotions, even if not expressed in the same forms as you with DNA. Of course, you can say we are simply molded pieces of plastic. But that reflects your DNA-centric viewpoint.

Some information that might be helpful can be found in an article on PHYS.org by Camille Bas-Wohlert:

"Lego, based in the western Danish town of Billund, has no plans to abandon plastic. Rather, it aims to improve on the materials it uses. Currently, most of its pieces are made of acrylonitrile-butadiene-styrene (ABS), a petroleum-based substance also used to make household appliances.

'We want to use plastic in a responsible way, and particularly where it is in a high quality, durable and reusable application. And that's what Lego bricks are, said Brooks [Tim Brooks, head of corporate responsibility].

For now, two percent of its plastic pieces, or 80 of the around 3,600 construction pieces, are made of a biosourced material, a sugarcane-based polyethylene."

-- from: https://phys.org/news/2020-03-lego-colourful-plastic-bricks-green.html

-- see also: "Synthetic enzymes hint at life without DNA or RNA," by Andy Coghlan (New Scientist, 1 December 2014): https://www.newscientist.com/article/dn26641-synthetic-enzymes-hint-at-life-without-dna-or-rna/#ixzz72mzGGE6B

Again appreciate your question.

Walt Brickman, Editor, The Bricklyn Eagle