Choose the one that works best. Or don’t choose just eat whatever if your body guide well enough. The ratio doesn’t matter as long as you eat right for your own individual body. We have very different needs.
Some people find that they need a specific fat/protein ratio, therapeutic keto has that too but in general, not that is what matters. Get enough nutrients, eat the way that you are satiated all day and feel okay if that is possible and don’t care about the actual ratio. Unless you need to focus on it in order to get what is good for you…
I won’t say what to do when choosing your food items as I don’t know you. I can’t even say it to myself as I need more experiments and I need a different approach in different times.
Even if you need high fat, it’s quite fine to eat lean meat if you love that, lots of people do that, you just need to add enough fat to your diet somehow
If it’s impossible for you, yep, it’s better to choose fattier protein sources. For me it’s the easiest, simplest, most convenient to eat meat with a fat/protein ratio that is good for my whole day… As I normally can’t eat pure fat and avoid added fat since long (not completely but as much as I can). But I like lean pork too so I eat it, I just add some really fatty meat as well but that requires more focus or plans - or I just accept that I will overeat protein, not like I wouldn’t do that with fatty meat as well but it’s still easier with lean as long as I enjoy it (I prefer fatty meat but some lean meat is quite amazing too). But if you aren’t prone to overeating, it’s easier. Unless if you are prone to undereating, some people undereat with leaner meat and don’t feel the need to add fat even though they need more energy from food.