SFO 737 Captain that is about 62% system seniority would be number 165 of 253 SFO 737 Captains. About 65% down the list of SFO 737 Captains
SFO 320 Captain that is about 62% system seniority would be number 97 of 160 SFO 320 Captains. About 61% down the list of SFO 320 Captains

So at 62% system seniority you would be a solid line holder in either narrowbody Captain seat in SFO

Of note, that same system seniority would buy you slightly better power as a SFO 777 FO and slightly worse power as a SFO 787 FO .

Narrowbody Captain vs Widebody FO is always an interesting dynamic. Different strokes for different folks I guess. Total $ is a little better as NB Captain, but $/day of work is better as a WB FO.