G54 is released in 2023 and g60 is released in 2021, that's what gsmarena shows. Why do u want to go for such old phone. Also both has ips display, if multimedia consumption is ur main use case, go for amoled displays.
I also see their battery capacities are 5000 and 6000mah, but with fast charging, it doesn't matter much I guess.
Anyways, have a look at realme narzo and pro series, they come around 20k, have good amoled screens, mid level SOCs and great camera setups. Battery cap at 5000mah with fast charging too.
Edit - just saw ur 15k limit in the headline - these models can come down 16 to 17k with offers during sale days
