My old ass is having the hardest time with the Linux 6.2 series, we were looking at 2.6.x from 2004-2011 (and then for years after on ancient Debian Stable and RHEL-like systems that remained in production forever; I think I only excised the last CentOS6 box among the systems I deal with this year).
Every time I see a question online or a uname or whatnot I have a second of “WHAT YEAR IS I… oh.”