Have a Barclay AA card and Wyndham card, and would like to keep both, but "Need" a Barclay Jetblue card to extend match status match to 2024. How likely is it to get a 3rd Barclay Card, assuming no hard pull in last 6mth?

I'd try it. It's a different "family" of cards. Let us know. But not buying the "need" part.

I have 4 Barclay card jetblue then AA business, then AA personal and Wyndham business apply for each card 6 month to 8 month appart

Do you actively use those cards?

I'd say probably pretty good. Barclay uses Trans Union mostly, IMO.
You may need to re-allocate credit limits, but that's easily doable (if that happens, you call the recon line).

I hold the Barclay Arrival ( downgraded from Arrival + way back when).
Applied for JetBlue personal, and within 3 months, JetBlue Business (approved for both)
Applied for Barclay AAdvantage Business and about 2 months later, the AAdvantage Personal
All approved

So currently hold 3 personal and 2 business with them. After the SUB, have used the JetBlue once. The AAdvantage got used twice more (only for paying taxes on award tickets). Arrival only got used for a 0% finance charge for 7 months for a large purchase. Otherwise they sit in the sock drawer and get cancelled at month 13.