It is established in AotC that Boba Fett is an "unaltered" clone of Jango - that is, he ages normally. By this logic, is Boba the first clone? Since he's around 10 in AotC, he must've been aging naturally for some time. Is there explicit confirmation that Boba was the first-ever Jango Fett clone made on Kamino?
The Bad Batch spoilers
In the most recent TBB episode, where Omega is revealed to be a genetic sibling to Boba Fett, it is also said that Boba's name on Kamino was "Alpha." This does seem to lend credence to him being the first clone.
Canon and/or Legends answers are accepted!