A quick look tells me you're second in terms of seasons in the EBBL. Elmacca has one more I think.
You actually promoted the season before him, but he's never relegated, whereas you have done so twice. But only for one season each time. So that puts him one season ahead of you.
Interestingly I looked at the EBBL the last time you promoted and even though that was season 19, there's only you, Elmacca and Muse whose teams have been in the EBBL since then without relegating. Hono and Vecx are both back, but only since relegating.
Most of the EBBL from Season 19 have since gone bot.