Those two does attend a lot of tournaments during their primes. When they do, they usually make an impact. Ranai usually attends most American majors and large regionals, while Kirihara obtains strong results in Japan and make some impact when he does attend American tournaments (aside from EVO 2017).
Apparently two PGR C tier events showed up today and ended today.
Overloads of Orlando 2 (C Tier) (Florida) (47 entrants) (Why is this tournament counted?!?)
1st: GoblinMan
2nd: Nibble
3rd: Ugar
4th: Outlaw
5th: Minty
5th: Gramatix
7th: Strazzy
7th: Indigo
I am not even going to bother checking who each one of them mains.
Umeki Project (C Tier) (Japan)
1st: Kirihara

(This is a funny coincidence.)
2nd: Umeki

3rd: Tsu-


4th: Mao

5th: kept

5th: KEN


7th: Eim

7th: Lea


9th: Gackt

9th: Raito

9th: huto



9th: Zackray


Interestingly, a lot of matches there were single game matches. Either that or the tournament organizers were lazy to record the precise outcome. I really don't know.