I gave up a long time ago trying to keep any semblance of order to my library.
A few years ago I was convicted by this verse:
1 John 2
26 These things have I written unto you concerning them that seduce you.
27 But the anointing which ye have received of him abideth in you, and ye need not that any man teach you: but as the same anointing teacheth you of all things, and is truth, and is no lie, and even as it hath taught you, ye shall abide in him.
At first I didn't include vs. 26 and concentrated my thinking on verse 27 and overlooked the context that these men who were trying to seduce the church John was addressing were false teachers, mere men who had not the Spirit.
So I do look for books by trustworthy authors along with inquiry of the LORD.
That keeps me busy enough.
But even at that I depend less on commentaries than I have in the past.
I do use my grammars and lexicons which are in reach of my desk (on it, around it, etc).
Currently in the senior group we are going through the Book of Hebrews and the commentary I am using is Peter O'Brien's The Letter to the Hebrews.
My suggestion FWIW is read/study/meditate upon the text first then have a primary trustworthy commentary.
I consulted with my pastor and to my surprise he had O'Brien books as well.
Though some have been recalled because he needs healthier documentation.
It always helps to consult with others when you buy books.
Ecclesiastes 12:12 And further, by these, my son, be admonished: of making many books there is no end; and much study is a weariness of the flesh.
HankD