I managed to quick test the RIVA/Lexus/Tumax SB-880AF. I strongly believe it has P-TTL but no swirl, manual, wireless or EV adjustment. Here's the test of ISO100 1/180s direct flash with no diffuser.
f2.8
f8.0
f9.5
Product details;
TUMAX SB-880AF
Also other rebrand model of Sakar 952AF/PEN are Lexus/Riva SB-3000AFP & DPT386AFZ-P