I have ~2500 LPs & for simplicity & versatility, file similarly to many distribution warehouses:
Using Ikea shelving, I have 4 rows x 6 columns, ie 24 cubes filling part of the music room wall. These are labelled A-D on the rows & 1-6 on the columns.
I keep a spreadsheet with all artists listed alphabetically & just mark which cube they are in ie A3, C1, D5 etc. Albums by that artist always go in the same cube & it's really fast to find anything. Otherwise new LPs just go into the next available cube, randomly by genre or artist name.
This saves reorganising things in a more conventional A-Z setup when new LPs are purchased and an existing cube is already full so everything to the right of that needs to be moved.