This thread has some ideas.
https://www.trainerroad.com/forum/t/strength-training
I use StrongLifts 5x5 app and method lifting 3/week in this phase of the year, down to 1/week for 2021. I tried more last season but it affected my sessions too much.
Edit
Ive been reading Joe Friels training bible, his strength recommendations havent really adjusted my views on 5x5 much but I might introduce power clean which he feels supports swimming.