Using Jesus as a reference is unfortunate, yeah, but any other world calendars have to pick a nearly equally arbitrary way to contextualize the start and end year.
I personally use “2024 CE” for “common era”, with BCE referring to “before common era”. This allows us to communicate relatively clearly with other people who use the Gregorian calendar without explicitly endorsing the birth of Jesus as the important event defining the switch-over between CE and BCE… A bit of a cop out, but
Anyway have fun, there are lots of options
Edit: also the one you’re referring to in your post is the Holocene Calendar