Monero, which has been around since 2014, has a nice roadmap page here:
https://www.getmonero.org/resources/roadmap/and a community workgroups page here:
https://www.getmonero.org/community/workgroups/
and here's a Twitter-article (ugh) from a maintainer of Monero regarding an attempted attack on Monero's privacy which refers to a number of privacy enhancements to Monero that have been implemented over the last three years:
https://threadreaderapp.com/thread/1326130648491417602.html
Whether you take this as proof of legitimacy or otherwise, the IRS has a bounty of $625,000 for anyone who can crack the privacy aspect of Monero:
https://securityboulevard.com/2020/09/can-you-crack-monero-i...
Skip to the conclusion of this review of Shiba Inu coin:
https://www.coinbureau.com/review/shiba-inu/