it's an old school thought that you have to add fat while putting on muscle. I've gone from 125 lbs when I was 18 to a current 200 lbs, and I have never been much fatter than you are now, if ever. It can be done, it just requires patience, but I think lean gains are absolutely the way to go. Some people think process is faster if you let yourself get fat while bulking, but I am of the opinion that those people generally overestimate how much muscle they are gaining. They just like seeing the weight on the scale going up and becoming physically larger. People used to think that if you're less than 200 lbs, you're small. That's absurd.
You should pay consistent attention to what you see in the mirror, and less what the scale says. If you see yourself getting fatter, you need to adjust your calorie intake AT THAT TIME. Don't accept major fat gains as just part of the process. Don't 'bulk' just because you want to see a particular number on the scale. The few times I've done that, I've ended up over eating, feeling like shit, and putting on fat that I didn't need to. The first time I saw 200 on the scale, I felt tired, sluggish, slow, and unathletic. The version of me at 200 lbs now is a much better version. I should have been satisfied with 185-190 when I was there, and slowly worked my way to 200, but I was so dead set on seeing that number that I sacrificed athleticism and quality of life to get there quicker. Don't be me