Or, as I mentioned before, SF may have already come up with and used ALL of these designs by the 24th century.
There are vast portions of UFP time we hadn't seen.
In fact, we saw at best 21 seasons of late 24th century across TNG, DS9 and VOY... however, all of these effectively 'overlap' and take place from 2363 to 2378 (aka, 15 years). New badge designs could have been developed every 5 years or so (we've seen 2 different badges as used on TNG and later on VOY).
That would provide SF with potential 40 different designs over just 200 years... we've seen that even different ships can have different badges.
Probably. Plus, Lower Decks and Discovery (and to a lesser extent, TOS) shows us that multiple badges can be used at the same time on different uniform designs or by different ships. The Future Imperfect design might've been pulled out of Riker's memory as a combadge he had used on the Hood or Betazed or something. The All Good Things... design may have been used originally in 2358 (back when Admiral Janeway was wearing his 2370s conbadge) as a trial run, before being picked up for use again in the 2390s (and/or modified into the STPicard badge). The 29th century crew may have adapted the use of the DTI symbol that had been used for the centuries since the 2270s.
We don't know, and I personally would've rather them use different known designs (like the Lower Decks, Discovery, the non-arrowhead TOS, Enterprise era, maybe some Klingon and Romulan symbols as well) or new designs of uncertain origin rather than headscratchers like this that require long-winded explanations.